Anton Blanchard
5 years ago
committed by
GitHub
commit
7c4dab7eb0
@ -0,0 +1,473 @@
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library ieee;
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use ieee.std_logic_1164.all;
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use ieee.numeric_std.all;
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library work;
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use work.common.all;
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-- Radix MMU
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-- Supports 4-level trees as in arch 3.0B, but not the two-step translation for
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-- guests under a hypervisor (i.e. there is no gRA -> hRA translation).
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entity mmu is
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port (
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clk : in std_ulogic;
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rst : in std_ulogic;
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l_in : in Loadstore1ToMmuType;
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l_out : out MmuToLoadstore1Type;
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d_out : out MmuToDcacheType;
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d_in : in DcacheToMmuType;
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i_out : out MmuToIcacheType
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);
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end mmu;
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architecture behave of mmu is
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type state_t is (IDLE,
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TLB_WAIT,
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PROC_TBL_READ,
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PROC_TBL_WAIT,
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SEGMENT_CHECK,
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RADIX_LOOKUP,
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RADIX_READ_WAIT,
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RADIX_LOAD_TLB,
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RADIX_ERROR
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);
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type reg_stage_t is record
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-- latched request from loadstore1
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valid : std_ulogic;
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iside : std_ulogic;
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store : std_ulogic;
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priv : std_ulogic;
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addr : std_ulogic_vector(63 downto 0);
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-- config SPRs
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prtbl : std_ulogic_vector(63 downto 0);
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pid : std_ulogic_vector(31 downto 0);
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-- internal state
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state : state_t;
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pgtbl0 : std_ulogic_vector(63 downto 0);
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pt0_valid : std_ulogic;
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pgtbl3 : std_ulogic_vector(63 downto 0);
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pt3_valid : std_ulogic;
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shift : unsigned(5 downto 0);
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mask_size : unsigned(4 downto 0);
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pgbase : std_ulogic_vector(55 downto 0);
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pde : std_ulogic_vector(63 downto 0);
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invalid : std_ulogic;
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badtree : std_ulogic;
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segerror : std_ulogic;
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perm_err : std_ulogic;
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rc_error : std_ulogic;
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end record;
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signal r, rin : reg_stage_t;
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signal addrsh : std_ulogic_vector(15 downto 0);
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signal mask : std_ulogic_vector(15 downto 0);
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signal finalmask : std_ulogic_vector(43 downto 0);
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begin
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-- Multiplex internal SPR values back to loadstore1, selected
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-- by l_in.sprn.
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l_out.sprval <= r.prtbl when l_in.sprn(9) = '1' else x"00000000" & r.pid;
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mmu_0: process(clk)
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begin
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if rising_edge(clk) then
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if rst = '1' then
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r.state <= IDLE;
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r.valid <= '0';
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r.pt0_valid <= '0';
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r.pt3_valid <= '0';
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r.prtbl <= (others => '0');
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else
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if rin.valid = '1' then
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report "MMU got tlb miss for " & to_hstring(rin.addr);
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end if;
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if l_out.done = '1' then
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report "MMU completing op with invalid=" & std_ulogic'image(l_out.invalid) &
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" badtree=" & std_ulogic'image(l_out.badtree);
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end if;
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if rin.state = RADIX_LOOKUP then
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report "radix lookup shift=" & integer'image(to_integer(rin.shift)) &
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" msize=" & integer'image(to_integer(rin.mask_size));
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end if;
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if r.state = RADIX_LOOKUP then
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report "send load addr=" & to_hstring(d_out.addr) &
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" addrsh=" & to_hstring(addrsh) & " mask=" & to_hstring(mask);
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end if;
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r <= rin;
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end if;
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end if;
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end process;
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-- Shift address bits 61--12 right by 0--47 bits and
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-- supply the least significant 16 bits of the result.
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addrshifter: process(all)
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variable sh1 : std_ulogic_vector(30 downto 0);
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variable sh2 : std_ulogic_vector(18 downto 0);
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variable result : std_ulogic_vector(15 downto 0);
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begin
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case r.shift(5 downto 4) is
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when "00" =>
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sh1 := r.addr(42 downto 12);
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when "01" =>
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sh1 := r.addr(58 downto 28);
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when others =>
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sh1 := "0000000000000" & r.addr(61 downto 44);
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end case;
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case r.shift(3 downto 2) is
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when "00" =>
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sh2 := sh1(18 downto 0);
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when "01" =>
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sh2 := sh1(22 downto 4);
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when "10" =>
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sh2 := sh1(26 downto 8);
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when others =>
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sh2 := sh1(30 downto 12);
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end case;
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case r.shift(1 downto 0) is
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when "00" =>
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result := sh2(15 downto 0);
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when "01" =>
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result := sh2(16 downto 1);
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when "10" =>
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result := sh2(17 downto 2);
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when others =>
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result := sh2(18 downto 3);
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end case;
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addrsh <= result;
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end process;
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-- generate mask for extracting address fields for PTE address generation
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addrmaskgen: process(all)
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variable m : std_ulogic_vector(15 downto 0);
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begin
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-- mask_count has to be >= 5
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m := x"001f";
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for i in 5 to 15 loop
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if i < to_integer(r.mask_size) then
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m(i) := '1';
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end if;
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end loop;
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mask <= m;
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end process;
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-- generate mask for extracting address bits to go in TLB entry
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-- in order to support pages > 4kB
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finalmaskgen: process(all)
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variable m : std_ulogic_vector(43 downto 0);
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begin
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m := (others => '0');
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for i in 0 to 43 loop
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if i < to_integer(r.shift) then
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m(i) := '1';
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end if;
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end loop;
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finalmask <= m;
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end process;
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mmu_1: process(all)
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variable v : reg_stage_t;
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variable dcreq : std_ulogic;
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variable done : std_ulogic;
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variable tlb_load : std_ulogic;
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variable itlb_load : std_ulogic;
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variable tlbie_req : std_ulogic;
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variable inval_all : std_ulogic;
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variable prtbl_rd : std_ulogic;
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variable pt_valid : std_ulogic;
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variable effpid : std_ulogic_vector(31 downto 0);
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variable prtable_addr : std_ulogic_vector(63 downto 0);
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variable rts : unsigned(5 downto 0);
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variable mbits : unsigned(5 downto 0);
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variable pgtable_addr : std_ulogic_vector(63 downto 0);
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variable pte : std_ulogic_vector(63 downto 0);
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variable tlb_data : std_ulogic_vector(63 downto 0);
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variable nonzero : std_ulogic;
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variable pgtbl : std_ulogic_vector(63 downto 0);
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variable perm_ok : std_ulogic;
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variable rc_ok : std_ulogic;
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variable addr : std_ulogic_vector(63 downto 0);
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variable data : std_ulogic_vector(63 downto 0);
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begin
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v := r;
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v.valid := '0';
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dcreq := '0';
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done := '0';
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v.invalid := '0';
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v.badtree := '0';
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v.segerror := '0';
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v.perm_err := '0';
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v.rc_error := '0';
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tlb_load := '0';
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itlb_load := '0';
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tlbie_req := '0';
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inval_all := '0';
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prtbl_rd := '0';
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-- Radix tree data structures in memory are big-endian,
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-- so we need to byte-swap them
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for i in 0 to 7 loop
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data(i * 8 + 7 downto i * 8) := d_in.data((7 - i) * 8 + 7 downto (7 - i) * 8);
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end loop;
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case r.state is
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when IDLE =>
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if l_in.addr(63) = '0' then
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pgtbl := r.pgtbl0;
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pt_valid := r.pt0_valid;
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else
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pgtbl := r.pgtbl3;
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pt_valid := r.pt3_valid;
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end if;
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-- rts == radix tree size, # address bits being translated
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rts := unsigned('0' & pgtbl(62 downto 61) & pgtbl(7 downto 5));
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-- mbits == # address bits to index top level of tree
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mbits := unsigned('0' & pgtbl(4 downto 0));
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-- set v.shift to rts so that we can use finalmask for the segment check
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v.shift := rts;
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v.mask_size := mbits(4 downto 0);
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v.pgbase := pgtbl(55 downto 8) & x"00";
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if l_in.valid = '1' then
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v.addr := l_in.addr;
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v.iside := l_in.iside;
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v.store := not (l_in.load or l_in.iside);
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v.priv := l_in.priv;
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if l_in.tlbie = '1' then
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dcreq := '1';
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tlbie_req := '1';
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-- Invalidate all iTLB/dTLB entries for tlbie with
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-- RB[IS] != 0 or RB[AP] != 0, or for slbia
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inval_all := l_in.slbia or l_in.addr(11) or l_in.addr(10) or
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l_in.addr(7) or l_in.addr(6) or l_in.addr(5);
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-- The RIC field of the tlbie instruction comes across on the
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-- sprn bus as bits 2--3. RIC=2 flushes process table caches.
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if l_in.sprn(3) = '1' then
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v.pt0_valid := '0';
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v.pt3_valid := '0';
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end if;
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v.state := TLB_WAIT;
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else
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v.valid := '1';
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if pt_valid = '0' then
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-- need to fetch process table entry
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-- set v.shift so we can use finalmask for generating
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-- the process table entry address
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v.shift := unsigned('0' & r.prtbl(4 downto 0));
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v.state := PROC_TBL_READ;
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elsif mbits = 0 then
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-- Use RPDS = 0 to disable radix tree walks
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v.state := RADIX_ERROR;
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v.invalid := '1';
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else
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v.state := SEGMENT_CHECK;
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end if;
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end if;
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end if;
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if l_in.mtspr = '1' then
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-- Move to PID needs to invalidate L1 TLBs and cached
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-- pgtbl0 value. Move to PRTBL does that plus
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-- invalidating the cached pgtbl3 value as well.
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if l_in.sprn(9) = '0' then
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v.pid := l_in.rs(31 downto 0);
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else
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v.prtbl := l_in.rs;
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v.pt3_valid := '0';
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end if;
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v.pt0_valid := '0';
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dcreq := '1';
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tlbie_req := '1';
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inval_all := '1';
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v.state := TLB_WAIT;
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end if;
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when TLB_WAIT =>
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if d_in.done = '1' then
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done := '1';
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v.state := IDLE;
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end if;
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when PROC_TBL_READ =>
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dcreq := '1';
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prtbl_rd := '1';
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v.state := PROC_TBL_WAIT;
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when PROC_TBL_WAIT =>
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if d_in.done = '1' then
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if d_in.err = '0' then
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if r.addr(63) = '1' then
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v.pgtbl3 := data;
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v.pt3_valid := '1';
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else
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v.pgtbl0 := data;
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v.pt0_valid := '1';
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end if;
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-- rts == radix tree size, # address bits being translated
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rts := unsigned('0' & data(62 downto 61) & data(7 downto 5));
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-- mbits == # address bits to index top level of tree
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mbits := unsigned('0' & data(4 downto 0));
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-- set v.shift to rts so that we can use finalmask for the segment check
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v.shift := rts;
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v.mask_size := mbits(4 downto 0);
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v.pgbase := data(55 downto 8) & x"00";
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if mbits = 0 then
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v.state := RADIX_ERROR;
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v.invalid := '1';
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else
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v.state := SEGMENT_CHECK;
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end if;
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else
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v.state := RADIX_ERROR;
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v.badtree := '1';
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end if;
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end if;
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when SEGMENT_CHECK =>
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mbits := '0' & r.mask_size;
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v.shift := r.shift + (31 - 12) - mbits;
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nonzero := or(r.addr(61 downto 31) and not finalmask(30 downto 0));
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if r.addr(63) /= r.addr(62) or nonzero = '1' then
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v.state := RADIX_ERROR;
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v.segerror := '1';
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elsif mbits < 5 or mbits > 16 or mbits > (r.shift + (31 - 12)) then
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v.state := RADIX_ERROR;
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v.badtree := '1';
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else
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v.state := RADIX_LOOKUP;
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end if;
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when RADIX_LOOKUP =>
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dcreq := '1';
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v.state := RADIX_READ_WAIT;
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when RADIX_READ_WAIT =>
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if d_in.done = '1' then
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if d_in.err = '0' then
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v.pde := data;
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-- test valid bit
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if data(63) = '1' then
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-- test leaf bit
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if data(62) = '1' then
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-- check permissions and RC bits
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perm_ok := '0';
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if r.priv = '1' or data(3) = '0' then
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if r.iside = '0' then
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perm_ok := data(1) or (data(2) and not r.store);
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else
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-- no IAMR, so no KUEP support for now
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-- deny execute permission if cache inhibited
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perm_ok := data(0) and not data(5);
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end if;
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end if;
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rc_ok := data(8) and (data(7) or not r.store);
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if perm_ok = '1' and rc_ok = '1' then
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v.state := RADIX_LOAD_TLB;
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else
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v.state := RADIX_ERROR;
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v.perm_err := not perm_ok;
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-- permission error takes precedence over RC error
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v.rc_error := perm_ok;
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end if;
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else
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mbits := unsigned('0' & data(4 downto 0));
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if mbits < 5 or mbits > 16 or mbits > r.shift then
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v.state := RADIX_ERROR;
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v.badtree := '1';
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else
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v.shift := v.shift - mbits;
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v.mask_size := mbits(4 downto 0);
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v.pgbase := data(55 downto 8) & x"00";
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v.state := RADIX_LOOKUP;
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end if;
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end if;
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else
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-- non-present PTE, generate a DSI
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v.state := RADIX_ERROR;
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v.invalid := '1';
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end if;
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else
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v.state := RADIX_ERROR;
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v.badtree := '1';
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end if;
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end if;
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when RADIX_LOAD_TLB =>
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tlb_load := '1';
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if r.iside = '0' then
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dcreq := '1';
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v.state := TLB_WAIT;
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else
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itlb_load := '1';
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done := '1';
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v.state := IDLE;
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end if;
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when RADIX_ERROR =>
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done := '1';
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v.state := IDLE;
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end case;
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if r.addr(63) = '1' then
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effpid := x"00000000";
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else
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effpid := r.pid;
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end if;
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prtable_addr := x"00" & r.prtbl(55 downto 36) &
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((r.prtbl(35 downto 12) and not finalmask(23 downto 0)) or
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(effpid(31 downto 8) and finalmask(23 downto 0))) &
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effpid(7 downto 0) & "0000";
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pgtable_addr := x"00" & r.pgbase(55 downto 19) &
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((r.pgbase(18 downto 3) and not mask) or (addrsh and mask)) &
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"000";
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pte := x"00" &
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((r.pde(55 downto 12) and not finalmask) or (r.addr(55 downto 12) and finalmask))
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& r.pde(11 downto 0);
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-- update registers
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rin <= v;
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-- drive outputs
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if tlbie_req = '1' then
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addr := l_in.addr;
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tlb_data := l_in.rs;
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elsif tlb_load = '1' then
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addr := r.addr(63 downto 12) & x"000";
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tlb_data := pte;
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elsif prtbl_rd = '1' then
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addr := prtable_addr;
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tlb_data := (others => '0');
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else
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addr := pgtable_addr;
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tlb_data := (others => '0');
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end if;
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l_out.done <= done;
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l_out.invalid <= r.invalid;
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l_out.badtree <= r.badtree;
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l_out.segerr <= r.segerror;
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l_out.perm_error <= r.perm_err;
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l_out.rc_error <= r.rc_error;
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|
||||
d_out.valid <= dcreq;
|
||||
d_out.tlbie <= tlbie_req;
|
||||
d_out.doall <= inval_all;
|
||||
d_out.tlbld <= tlb_load;
|
||||
d_out.addr <= addr;
|
||||
d_out.pte <= tlb_data;
|
||||
|
||||
i_out.tlbld <= itlb_load;
|
||||
i_out.tlbie <= tlbie_req;
|
||||
i_out.doall <= inval_all;
|
||||
i_out.addr <= addr;
|
||||
i_out.pte <= tlb_data;
|
||||
|
||||
end process;
|
||||
end;
|
||||
@ -0,0 +1,3 @@
|
||||
TEST=mmu
|
||||
|
||||
include ../Makefile.test
|
||||
@ -0,0 +1,179 @@
|
||||
/* Copyright 2013-2014 IBM Corp.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
* implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
/* Load an immediate 64-bit value into a register */
|
||||
#define LOAD_IMM64(r, e) \
|
||||
lis r,(e)@highest; \
|
||||
ori r,r,(e)@higher; \
|
||||
rldicr r,r, 32, 31; \
|
||||
oris r,r, (e)@h; \
|
||||
ori r,r, (e)@l;
|
||||
|
||||
.section ".head","ax"
|
||||
|
||||
/*
|
||||
* Microwatt currently enters in LE mode at 0x0, so we don't need to
|
||||
* do any endian fix ups
|
||||
*/
|
||||
. = 0
|
||||
.global _start
|
||||
_start:
|
||||
LOAD_IMM64(%r10,__bss_start)
|
||||
LOAD_IMM64(%r11,__bss_end)
|
||||
subf %r11,%r10,%r11
|
||||
addi %r11,%r11,63
|
||||
srdi. %r11,%r11,6
|
||||
beq 2f
|
||||
mtctr %r11
|
||||
1: dcbz 0,%r10
|
||||
addi %r10,%r10,64
|
||||
bdnz 1b
|
||||
|
||||
2: LOAD_IMM64(%r1,__stack_top)
|
||||
li %r0,0
|
||||
stdu %r0,-16(%r1)
|
||||
LOAD_IMM64(%r12, main)
|
||||
mtctr %r12
|
||||
bctrl
|
||||
attn // terminate on exit
|
||||
b .
|
||||
|
||||
/* Read a location with translation on */
|
||||
.globl test_read
|
||||
test_read:
|
||||
mfmsr %r9
|
||||
ori %r8,%r9,0x10 /* set MSR_DR */
|
||||
mtmsrd %r8,0
|
||||
mr %r6,%r3
|
||||
li %r3,0
|
||||
ld %r5,0(%r6)
|
||||
li %r3,1
|
||||
/* land here if DSI occurred */
|
||||
mtmsrd %r9,0
|
||||
std %r5,0(%r4)
|
||||
blr
|
||||
|
||||
/* Write a location with translation on */
|
||||
.globl test_write
|
||||
test_write:
|
||||
mfmsr %r9
|
||||
ori %r8,%r9,0x10 /* set MSR_DR */
|
||||
mtmsrd %r8,0
|
||||
mr %r6,%r3
|
||||
li %r3,0
|
||||
std %r4,0(%r6)
|
||||
li %r3,1
|
||||
/* land here if DSI occurred */
|
||||
mtmsrd %r9,0
|
||||
blr
|
||||
|
||||
/* Do a dcbz with translation on */
|
||||
.globl test_dcbz
|
||||
test_dcbz:
|
||||
mfmsr %r9
|
||||
ori %r8,%r9,0x10 /* set MSR_DR */
|
||||
mtmsrd %r8,0
|
||||
mr %r6,%r3
|
||||
li %r3,0
|
||||
dcbz 0,%r6
|
||||
li %r3,1
|
||||
/* land here if DSI occurred */
|
||||
mtmsrd %r9,0
|
||||
blr
|
||||
|
||||
.globl test_exec
|
||||
test_exec:
|
||||
mtsrr0 %r4
|
||||
mtsrr1 %r5
|
||||
rfid
|
||||
|
||||
#define EXCEPTION(nr) \
|
||||
.= nr ;\
|
||||
attn
|
||||
|
||||
/* DSI vector - skip the failing instruction + the next one */
|
||||
. = 0x300
|
||||
mtsprg0 %r10
|
||||
mfsrr0 %r10
|
||||
addi %r10,%r10,8
|
||||
mtsrr0 %r10
|
||||
rfid
|
||||
|
||||
EXCEPTION(0x380)
|
||||
|
||||
/*
|
||||
* ISI vector - jump to LR to return from the test,
|
||||
* with r3 cleared
|
||||
*/
|
||||
. = 0x400
|
||||
li %r3,0
|
||||
blr
|
||||
|
||||
/* More exception stubs */
|
||||
EXCEPTION(0x480)
|
||||
EXCEPTION(0x500)
|
||||
EXCEPTION(0x600)
|
||||
EXCEPTION(0x700)
|
||||
EXCEPTION(0x800)
|
||||
EXCEPTION(0x900)
|
||||
EXCEPTION(0x980)
|
||||
EXCEPTION(0xa00)
|
||||
EXCEPTION(0xb00)
|
||||
|
||||
/*
|
||||
* System call - used to exit from tests where MSR[PR]
|
||||
* may have been set.
|
||||
*/
|
||||
. = 0xc00
|
||||
blr
|
||||
|
||||
EXCEPTION(0xd00)
|
||||
EXCEPTION(0xe00)
|
||||
EXCEPTION(0xe20)
|
||||
EXCEPTION(0xe40)
|
||||
EXCEPTION(0xe60)
|
||||
EXCEPTION(0xe80)
|
||||
EXCEPTION(0xf00)
|
||||
EXCEPTION(0xf20)
|
||||
EXCEPTION(0xf40)
|
||||
EXCEPTION(0xf60)
|
||||
EXCEPTION(0xf80)
|
||||
|
||||
. = 0x1000
|
||||
/*
|
||||
* This page gets mapped at various locations and
|
||||
* the tests try to execute from it.
|
||||
* r3 contains the test number.
|
||||
*/
|
||||
.globl test_start
|
||||
test_start:
|
||||
nop
|
||||
nop
|
||||
cmpdi %r3,1
|
||||
beq test_1
|
||||
cmpdi %r3,2
|
||||
beq test_2
|
||||
test_return:
|
||||
li %r3,1
|
||||
sc
|
||||
|
||||
. = 0x1ff8
|
||||
/* test a branch near the end of a page */
|
||||
test_1: b test_return
|
||||
|
||||
/* test flowing from one page to the next */
|
||||
test_2: nop
|
||||
b test_return
|
||||
@ -0,0 +1,688 @@
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
#include "console.h"
|
||||
|
||||
#define MSR_DR 0x10
|
||||
#define MSR_IR 0x20
|
||||
|
||||
extern int test_read(long *addr, long *ret, long init);
|
||||
extern int test_write(long *addr, long val);
|
||||
extern int test_dcbz(long *addr);
|
||||
extern int test_exec(int testno, unsigned long pc, unsigned long msr);
|
||||
|
||||
static inline void do_tlbie(unsigned long rb, unsigned long rs)
|
||||
{
|
||||
__asm__ volatile("tlbie %0,%1" : : "r" (rb), "r" (rs) : "memory");
|
||||
}
|
||||
|
||||
#define DSISR 18
|
||||
#define DAR 19
|
||||
#define SRR0 26
|
||||
#define SRR1 27
|
||||
#define PID 48
|
||||
#define PRTBL 720
|
||||
|
||||
static inline unsigned long mfspr(int sprnum)
|
||||
{
|
||||
long val;
|
||||
|
||||
__asm__ volatile("mfspr %0,%1" : "=r" (val) : "i" (sprnum));
|
||||
return val;
|
||||
}
|
||||
|
||||
static inline void mtspr(int sprnum, unsigned long val)
|
||||
{
|
||||
__asm__ volatile("mtspr %0,%1" : : "i" (sprnum), "r" (val));
|
||||
}
|
||||
|
||||
static inline void store_pte(unsigned long *p, unsigned long pte)
|
||||
{
|
||||
__asm__ volatile("stdbrx %1,0,%0" : : "r" (p), "r" (pte) : "memory");
|
||||
}
|
||||
|
||||
void print_string(const char *str)
|
||||
{
|
||||
for (; *str; ++str)
|
||||
putchar(*str);
|
||||
}
|
||||
|
||||
void print_hex(unsigned long val)
|
||||
{
|
||||
int i, x;
|
||||
|
||||
for (i = 60; i >= 0; i -= 4) {
|
||||
x = (val >> i) & 0xf;
|
||||
if (x >= 10)
|
||||
putchar(x + 'a' - 10);
|
||||
else
|
||||
putchar(x + '0');
|
||||
}
|
||||
}
|
||||
|
||||
// i < 100
|
||||
void print_test_number(int i)
|
||||
{
|
||||
print_string("test ");
|
||||
putchar(48 + i/10);
|
||||
putchar(48 + i%10);
|
||||
putchar(':');
|
||||
}
|
||||
|
||||
#define CACHE_LINE_SIZE 64
|
||||
|
||||
void zero_memory(void *ptr, unsigned long nbytes)
|
||||
{
|
||||
unsigned long nb, i, nl;
|
||||
void *p;
|
||||
|
||||
for (; nbytes != 0; nbytes -= nb, ptr += nb) {
|
||||
nb = -((unsigned long)ptr) & (CACHE_LINE_SIZE - 1);
|
||||
if (nb == 0 && nbytes >= CACHE_LINE_SIZE) {
|
||||
nl = nbytes / CACHE_LINE_SIZE;
|
||||
p = ptr;
|
||||
for (i = 0; i < nl; ++i) {
|
||||
__asm__ volatile("dcbz 0,%0" : : "r" (p) : "memory");
|
||||
p += CACHE_LINE_SIZE;
|
||||
}
|
||||
nb = nl * CACHE_LINE_SIZE;
|
||||
} else {
|
||||
if (nb > nbytes)
|
||||
nb = nbytes;
|
||||
for (i = 0; i < nb; ++i)
|
||||
((unsigned char *)ptr)[i] = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define PERM_EX 0x001
|
||||
#define PERM_WR 0x002
|
||||
#define PERM_RD 0x004
|
||||
#define PERM_PRIV 0x008
|
||||
#define ATTR_NC 0x020
|
||||
#define CHG 0x080
|
||||
#define REF 0x100
|
||||
|
||||
#define DFLT_PERM (PERM_WR | PERM_RD | REF | CHG)
|
||||
|
||||
/*
|
||||
* Set up an MMU translation tree using memory starting at the 64k point.
|
||||
* We use 2 levels, mapping 2GB (the minimum size possible), with a
|
||||
* 8kB PGD level pointing to 4kB PTE pages.
|
||||
*/
|
||||
unsigned long *pgdir = (unsigned long *) 0x10000;
|
||||
unsigned long *proc_tbl = (unsigned long *) 0x12000;
|
||||
unsigned long free_ptr = 0x13000;
|
||||
void *eas_mapped[4];
|
||||
int neas_mapped;
|
||||
|
||||
void init_mmu(void)
|
||||
{
|
||||
/* set up process table */
|
||||
zero_memory(proc_tbl, 512 * sizeof(unsigned long));
|
||||
mtspr(PRTBL, (unsigned long)proc_tbl);
|
||||
mtspr(PID, 1);
|
||||
zero_memory(pgdir, 1024 * sizeof(unsigned long));
|
||||
/* RTS = 0 (2GB address space), RPDS = 10 (1024-entry top level) */
|
||||
store_pte(&proc_tbl[2 * 1], (unsigned long) pgdir | 10);
|
||||
do_tlbie(0xc00, 0); /* invalidate all TLB entries */
|
||||
}
|
||||
|
||||
static unsigned long *read_pgd(unsigned long i)
|
||||
{
|
||||
unsigned long ret;
|
||||
|
||||
__asm__ volatile("ldbrx %0,%1,%2" : "=r" (ret) : "b" (pgdir),
|
||||
"r" (i * sizeof(unsigned long)));
|
||||
return (unsigned long *) (ret & 0x00ffffffffffff00);
|
||||
}
|
||||
|
||||
void map(void *ea, void *pa, unsigned long perm_attr)
|
||||
{
|
||||
unsigned long epn = (unsigned long) ea >> 12;
|
||||
unsigned long i, j;
|
||||
unsigned long *ptep;
|
||||
|
||||
i = (epn >> 9) & 0x3ff;
|
||||
j = epn & 0x1ff;
|
||||
if (pgdir[i] == 0) {
|
||||
zero_memory((void *)free_ptr, 512 * sizeof(unsigned long));
|
||||
store_pte(&pgdir[i], 0x8000000000000000 | free_ptr | 9);
|
||||
free_ptr += 512 * sizeof(unsigned long);
|
||||
}
|
||||
ptep = read_pgd(i);
|
||||
store_pte(&ptep[j], 0xc000000000000000 | ((unsigned long)pa & 0x00fffffffffff000) | perm_attr);
|
||||
eas_mapped[neas_mapped++] = ea;
|
||||
}
|
||||
|
||||
void unmap(void *ea)
|
||||
{
|
||||
unsigned long epn = (unsigned long) ea >> 12;
|
||||
unsigned long i, j;
|
||||
unsigned long *ptep;
|
||||
|
||||
i = (epn >> 9) & 0x3ff;
|
||||
j = epn & 0x1ff;
|
||||
if (pgdir[i] == 0)
|
||||
return;
|
||||
ptep = read_pgd(i);
|
||||
ptep[j] = 0;
|
||||
do_tlbie(((unsigned long)ea & ~0xfff), 0);
|
||||
}
|
||||
|
||||
void unmap_all(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < neas_mapped; ++i)
|
||||
unmap(eas_mapped[i]);
|
||||
neas_mapped = 0;
|
||||
}
|
||||
|
||||
int mmu_test_1(void)
|
||||
{
|
||||
long *ptr = (long *) 0x123000;
|
||||
long val;
|
||||
|
||||
/* this should fail */
|
||||
if (test_read(ptr, &val, 0xdeadbeefd00d))
|
||||
return 1;
|
||||
/* dest reg of load should be unchanged */
|
||||
if (val != 0xdeadbeefd00d)
|
||||
return 2;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != (long) ptr || mfspr(DSISR) != 0x40000000)
|
||||
return 3;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_2(void)
|
||||
{
|
||||
long *mem = (long *) 0x8000;
|
||||
long *ptr = (long *) 0x124000;
|
||||
long *ptr2 = (long *) 0x1124000;
|
||||
long val;
|
||||
|
||||
/* create PTE */
|
||||
map(ptr, mem, DFLT_PERM);
|
||||
/* initialize the memory content */
|
||||
mem[33] = 0xbadc0ffee;
|
||||
/* this should succeed and be a cache miss */
|
||||
if (!test_read(&ptr[33], &val, 0xdeadbeefd00d))
|
||||
return 1;
|
||||
/* dest reg of load should have the value written */
|
||||
if (val != 0xbadc0ffee)
|
||||
return 2;
|
||||
/* load a second TLB entry in the same set as the first */
|
||||
map(ptr2, mem, DFLT_PERM);
|
||||
/* this should succeed and be a cache hit */
|
||||
if (!test_read(&ptr2[33], &val, 0xdeadbeefd00d))
|
||||
return 3;
|
||||
/* dest reg of load should have the value written */
|
||||
if (val != 0xbadc0ffee)
|
||||
return 4;
|
||||
/* check that the first entry still works */
|
||||
if (!test_read(&ptr[33], &val, 0xdeadbeefd00d))
|
||||
return 5;
|
||||
if (val != 0xbadc0ffee)
|
||||
return 6;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_3(void)
|
||||
{
|
||||
long *mem = (long *) 0x9000;
|
||||
long *ptr = (long *) 0x14a000;
|
||||
long val;
|
||||
|
||||
/* create PTE */
|
||||
map(ptr, mem, DFLT_PERM);
|
||||
/* initialize the memory content */
|
||||
mem[45] = 0xfee1800d4ea;
|
||||
/* this should succeed and be a cache miss */
|
||||
if (!test_read(&ptr[45], &val, 0xdeadbeefd0d0))
|
||||
return 1;
|
||||
/* dest reg of load should have the value written */
|
||||
if (val != 0xfee1800d4ea)
|
||||
return 2;
|
||||
/* remove the PTE */
|
||||
unmap(ptr);
|
||||
/* this should fail */
|
||||
if (test_read(&ptr[45], &val, 0xdeadbeefd0d0))
|
||||
return 3;
|
||||
/* dest reg of load should be unchanged */
|
||||
if (val != 0xdeadbeefd0d0)
|
||||
return 4;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != (long) &ptr[45] || mfspr(DSISR) != 0x40000000)
|
||||
return 5;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_4(void)
|
||||
{
|
||||
long *mem = (long *) 0xa000;
|
||||
long *ptr = (long *) 0x10b000;
|
||||
long *ptr2 = (long *) 0x110b000;
|
||||
long val;
|
||||
|
||||
/* create PTE */
|
||||
map(ptr, mem, DFLT_PERM);
|
||||
/* initialize the memory content */
|
||||
mem[27] = 0xf00f00f00f00;
|
||||
/* this should succeed and be a cache miss */
|
||||
if (!test_write(&ptr[27], 0xe44badc0ffee))
|
||||
return 1;
|
||||
/* memory should now have the value written */
|
||||
if (mem[27] != 0xe44badc0ffee)
|
||||
return 2;
|
||||
/* load a second TLB entry in the same set as the first */
|
||||
map(ptr2, mem, DFLT_PERM);
|
||||
/* this should succeed and be a cache hit */
|
||||
if (!test_write(&ptr2[27], 0x6e11ae))
|
||||
return 3;
|
||||
/* memory should have the value written */
|
||||
if (mem[27] != 0x6e11ae)
|
||||
return 4;
|
||||
/* check that the first entry still exists */
|
||||
/* (assumes TLB is 2-way associative or more) */
|
||||
if (!test_read(&ptr[27], &val, 0xdeadbeefd00d))
|
||||
return 5;
|
||||
if (val != 0x6e11ae)
|
||||
return 6;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_5(void)
|
||||
{
|
||||
long *mem = (long *) 0xbffd;
|
||||
long *ptr = (long *) 0x39fffd;
|
||||
long val;
|
||||
|
||||
/* create PTE */
|
||||
map(ptr, mem, DFLT_PERM);
|
||||
/* this should fail */
|
||||
if (test_read(ptr, &val, 0xdeadbeef0dd0))
|
||||
return 1;
|
||||
/* dest reg of load should be unchanged */
|
||||
if (val != 0xdeadbeef0dd0)
|
||||
return 2;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != ((long)ptr & ~0xfff) + 0x1000 || mfspr(DSISR) != 0x40000000)
|
||||
return 3;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_6(void)
|
||||
{
|
||||
long *mem = (long *) 0xbffd;
|
||||
long *ptr = (long *) 0x39fffd;
|
||||
|
||||
/* create PTE */
|
||||
map(ptr, mem, DFLT_PERM);
|
||||
/* initialize memory */
|
||||
*mem = 0x123456789abcdef0;
|
||||
/* this should fail */
|
||||
if (test_write(ptr, 0xdeadbeef0dd0))
|
||||
return 1;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != ((long)ptr & ~0xfff) + 0x1000 || mfspr(DSISR) != 0x42000000)
|
||||
return 2;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_7(void)
|
||||
{
|
||||
long *mem = (long *) 0x8000;
|
||||
long *ptr = (long *) 0x124000;
|
||||
long val;
|
||||
|
||||
*mem = 0x123456789abcdef0;
|
||||
/* create PTE without R or C */
|
||||
map(ptr, mem, PERM_RD | PERM_WR);
|
||||
/* this should fail */
|
||||
if (test_read(ptr, &val, 0xdeadd00dbeef))
|
||||
return 1;
|
||||
/* dest reg of load should be unchanged */
|
||||
if (val != 0xdeadd00dbeef)
|
||||
return 2;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != (long) ptr || mfspr(DSISR) != 0x00040000)
|
||||
return 3;
|
||||
/* this should fail */
|
||||
if (test_write(ptr, 0xdeadbeef0dd0))
|
||||
return 4;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != (long)ptr || mfspr(DSISR) != 0x02040000)
|
||||
return 5;
|
||||
/* memory should be unchanged */
|
||||
if (*mem != 0x123456789abcdef0)
|
||||
return 6;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_8(void)
|
||||
{
|
||||
long *mem = (long *) 0x8000;
|
||||
long *ptr = (long *) 0x124000;
|
||||
long val;
|
||||
|
||||
*mem = 0x123456789abcdef0;
|
||||
/* create PTE with R but not C */
|
||||
map(ptr, mem, REF | PERM_RD | PERM_WR);
|
||||
/* this should succeed */
|
||||
if (!test_read(ptr, &val, 0xdeadd00dbeef))
|
||||
return 1;
|
||||
/* this should fail */
|
||||
if (test_write(ptr, 0xdeadbeef0dd1))
|
||||
return 2;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != (long)ptr || mfspr(DSISR) != 0x02040000)
|
||||
return 3;
|
||||
/* memory should be unchanged */
|
||||
if (*mem != 0x123456789abcdef0)
|
||||
return 4;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_9(void)
|
||||
{
|
||||
long *mem = (long *) 0x8000;
|
||||
long *ptr = (long *) 0x124000;
|
||||
long val;
|
||||
|
||||
*mem = 0x123456789abcdef0;
|
||||
/* create PTE without read or write permission */
|
||||
map(ptr, mem, REF);
|
||||
/* this should fail */
|
||||
if (test_read(ptr, &val, 0xdeadd00dbeef))
|
||||
return 1;
|
||||
/* dest reg of load should be unchanged */
|
||||
if (val != 0xdeadd00dbeef)
|
||||
return 2;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != (long) ptr || mfspr(DSISR) != 0x08000000)
|
||||
return 3;
|
||||
/* this should fail */
|
||||
if (test_write(ptr, 0xdeadbeef0dd1))
|
||||
return 4;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != (long)ptr || mfspr(DSISR) != 0x0a000000)
|
||||
return 5;
|
||||
/* memory should be unchanged */
|
||||
if (*mem != 0x123456789abcdef0)
|
||||
return 6;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_10(void)
|
||||
{
|
||||
long *mem = (long *) 0x8000;
|
||||
long *ptr = (long *) 0x124000;
|
||||
long val;
|
||||
|
||||
*mem = 0x123456789abcdef0;
|
||||
/* create PTE with read but not write permission */
|
||||
map(ptr, mem, REF | PERM_RD);
|
||||
/* this should succeed */
|
||||
if (!test_read(ptr, &val, 0xdeadd00dbeef))
|
||||
return 1;
|
||||
/* this should fail */
|
||||
if (test_write(ptr, 0xdeadbeef0dd1))
|
||||
return 2;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != (long)ptr || mfspr(DSISR) != 0x0a000000)
|
||||
return 3;
|
||||
/* memory should be unchanged */
|
||||
if (*mem != 0x123456789abcdef0)
|
||||
return 4;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_11(void)
|
||||
{
|
||||
unsigned long ptr = 0x523000;
|
||||
|
||||
/* this should fail */
|
||||
if (test_exec(0, ptr, MSR_IR))
|
||||
return 1;
|
||||
/* SRR0 and SRR1 should be set correctly */
|
||||
if (mfspr(SRR0) != (long) ptr || mfspr(SRR1) != 0x40000020)
|
||||
return 2;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_12(void)
|
||||
{
|
||||
unsigned long mem = 0x1000;
|
||||
unsigned long ptr = 0x324000;
|
||||
unsigned long ptr2 = 0x1324000;
|
||||
|
||||
/* create PTE */
|
||||
map((void *)ptr, (void *)mem, PERM_EX | REF);
|
||||
/* this should succeed and be a cache miss */
|
||||
if (!test_exec(0, ptr, MSR_IR))
|
||||
return 1;
|
||||
/* create a second PTE */
|
||||
map((void *)ptr2, (void *)mem, PERM_EX | REF);
|
||||
/* this should succeed and be a cache hit */
|
||||
if (!test_exec(0, ptr2, MSR_IR))
|
||||
return 2;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_13(void)
|
||||
{
|
||||
unsigned long mem = 0x1000;
|
||||
unsigned long ptr = 0x349000;
|
||||
unsigned long ptr2 = 0x34a000;
|
||||
|
||||
/* create a PTE */
|
||||
map((void *)ptr, (void *)mem, PERM_EX | REF);
|
||||
/* this should succeed */
|
||||
if (!test_exec(1, ptr, MSR_IR))
|
||||
return 1;
|
||||
/* invalidate the PTE */
|
||||
unmap((void *)ptr);
|
||||
/* install a second PTE */
|
||||
map((void *)ptr2, (void *)mem, PERM_EX | REF);
|
||||
/* this should fail */
|
||||
if (test_exec(1, ptr, MSR_IR))
|
||||
return 2;
|
||||
/* SRR0 and SRR1 should be set correctly */
|
||||
if (mfspr(SRR0) != (long) ptr || mfspr(SRR1) != 0x40000020)
|
||||
return 3;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_14(void)
|
||||
{
|
||||
unsigned long mem = 0x1000;
|
||||
unsigned long mem2 = 0x2000;
|
||||
unsigned long ptr = 0x30a000;
|
||||
unsigned long ptr2 = 0x30b000;
|
||||
|
||||
/* create a PTE */
|
||||
map((void *)ptr, (void *)mem, PERM_EX | REF);
|
||||
/* this should fail due to second page not being mapped */
|
||||
if (test_exec(2, ptr, MSR_IR))
|
||||
return 1;
|
||||
/* SRR0 and SRR1 should be set correctly */
|
||||
if (mfspr(SRR0) != ptr2 || mfspr(SRR1) != 0x40000020)
|
||||
return 2;
|
||||
/* create a PTE for the second page */
|
||||
map((void *)ptr2, (void *)mem2, PERM_EX | REF);
|
||||
/* this should succeed */
|
||||
if (!test_exec(2, ptr, MSR_IR))
|
||||
return 3;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_15(void)
|
||||
{
|
||||
unsigned long mem = 0x1000;
|
||||
unsigned long ptr = 0x324000;
|
||||
|
||||
/* create a PTE without execute permission */
|
||||
map((void *)ptr, (void *)mem, DFLT_PERM);
|
||||
/* this should fail */
|
||||
if (test_exec(0, ptr, MSR_IR))
|
||||
return 1;
|
||||
/* SRR0 and SRR1 should be set correctly */
|
||||
if (mfspr(SRR0) != ptr || mfspr(SRR1) != 0x10000020)
|
||||
return 2;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_16(void)
|
||||
{
|
||||
unsigned long mem = 0x1000;
|
||||
unsigned long mem2 = 0x2000;
|
||||
unsigned long ptr = 0x30a000;
|
||||
unsigned long ptr2 = 0x30b000;
|
||||
|
||||
/* create a PTE */
|
||||
map((void *)ptr, (void *)mem, PERM_EX | REF);
|
||||
/* create a PTE for the second page without execute permission */
|
||||
map((void *)ptr2, (void *)mem2, PERM_RD | REF);
|
||||
/* this should fail due to second page being no-execute */
|
||||
if (test_exec(2, ptr, MSR_IR))
|
||||
return 1;
|
||||
/* SRR0 and SRR1 should be set correctly */
|
||||
if (mfspr(SRR0) != ptr2 || mfspr(SRR1) != 0x10000020)
|
||||
return 2;
|
||||
/* create a PTE for the second page with execute permission */
|
||||
map((void *)ptr2, (void *)mem2, PERM_RD | PERM_EX | REF);
|
||||
/* this should succeed */
|
||||
if (!test_exec(2, ptr, MSR_IR))
|
||||
return 3;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_17(void)
|
||||
{
|
||||
unsigned long mem = 0x1000;
|
||||
unsigned long ptr = 0x349000;
|
||||
|
||||
/* create a PTE without the ref bit set */
|
||||
map((void *)ptr, (void *)mem, PERM_EX);
|
||||
/* this should fail */
|
||||
if (test_exec(2, ptr, MSR_IR))
|
||||
return 1;
|
||||
/* SRR0 and SRR1 should be set correctly */
|
||||
if (mfspr(SRR0) != (long) ptr || mfspr(SRR1) != 0x00040020)
|
||||
return 2;
|
||||
/* create a PTE without ref or execute permission */
|
||||
unmap((void *)ptr);
|
||||
map((void *)ptr, (void *)mem, 0);
|
||||
/* this should fail */
|
||||
if (test_exec(2, ptr, MSR_IR))
|
||||
return 1;
|
||||
/* SRR0 and SRR1 should be set correctly */
|
||||
/* RC update fail bit should not be set */
|
||||
if (mfspr(SRR0) != (long) ptr || mfspr(SRR1) != 0x10000020)
|
||||
return 2;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_18(void)
|
||||
{
|
||||
long *mem = (long *) 0x8000;
|
||||
long *ptr = (long *) 0x124000;
|
||||
long *ptr2 = (long *) 0x1124000;
|
||||
|
||||
/* create PTE */
|
||||
map(ptr, mem, DFLT_PERM);
|
||||
/* this should succeed and be a cache miss */
|
||||
if (!test_dcbz(&ptr[129]))
|
||||
return 1;
|
||||
/* create a second PTE */
|
||||
map(ptr2, mem, DFLT_PERM);
|
||||
/* this should succeed and be a cache hit */
|
||||
if (!test_dcbz(&ptr2[130]))
|
||||
return 2;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmu_test_19(void)
|
||||
{
|
||||
long *mem = (long *) 0x8000;
|
||||
long *ptr = (long *) 0x124000;
|
||||
|
||||
*mem = 0x123456789abcdef0;
|
||||
/* create PTE with read but not write permission */
|
||||
map(ptr, mem, REF | PERM_RD);
|
||||
/* this should fail and create a TLB entry */
|
||||
if (test_write(ptr, 0xdeadbeef0dd1))
|
||||
return 1;
|
||||
/* DAR and DSISR should be set correctly */
|
||||
if (mfspr(DAR) != (long)ptr || mfspr(DSISR) != 0x0a000000)
|
||||
return 2;
|
||||
/* Update the PTE to have write permission */
|
||||
map(ptr, mem, REF | CHG | PERM_RD | PERM_WR);
|
||||
/* this should succeed */
|
||||
if (!test_write(ptr, 0xdeadbeef0dd1))
|
||||
return 3;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int fail = 0;
|
||||
|
||||
void do_test(int num, int (*test)(void))
|
||||
{
|
||||
int ret;
|
||||
|
||||
mtspr(DSISR, 0);
|
||||
mtspr(DAR, 0);
|
||||
unmap_all();
|
||||
print_test_number(num);
|
||||
ret = test();
|
||||
if (ret == 0) {
|
||||
print_string("PASS\r\n");
|
||||
} else {
|
||||
fail = 1;
|
||||
print_string("FAIL ");
|
||||
putchar(ret + '0');
|
||||
if (num <= 10 || num == 19) {
|
||||
print_string(" DAR=");
|
||||
print_hex(mfspr(DAR));
|
||||
print_string(" DSISR=");
|
||||
print_hex(mfspr(DSISR));
|
||||
} else {
|
||||
print_string(" SRR0=");
|
||||
print_hex(mfspr(SRR0));
|
||||
print_string(" SRR1=");
|
||||
print_hex(mfspr(SRR1));
|
||||
}
|
||||
print_string("\r\n");
|
||||
}
|
||||
}
|
||||
|
||||
int main(void)
|
||||
{
|
||||
potato_uart_init();
|
||||
init_mmu();
|
||||
|
||||
do_test(1, mmu_test_1);
|
||||
do_test(2, mmu_test_2);
|
||||
do_test(3, mmu_test_3);
|
||||
do_test(4, mmu_test_4);
|
||||
do_test(5, mmu_test_5);
|
||||
do_test(6, mmu_test_6);
|
||||
do_test(7, mmu_test_7);
|
||||
do_test(8, mmu_test_8);
|
||||
do_test(9, mmu_test_9);
|
||||
do_test(10, mmu_test_10);
|
||||
do_test(11, mmu_test_11);
|
||||
do_test(12, mmu_test_12);
|
||||
do_test(13, mmu_test_13);
|
||||
do_test(14, mmu_test_14);
|
||||
do_test(15, mmu_test_15);
|
||||
do_test(16, mmu_test_16);
|
||||
do_test(17, mmu_test_17);
|
||||
do_test(18, mmu_test_18);
|
||||
do_test(19, mmu_test_19);
|
||||
|
||||
return fail;
|
||||
}
|
||||
@ -0,0 +1,27 @@
|
||||
SECTIONS
|
||||
{
|
||||
. = 0;
|
||||
_start = .;
|
||||
.head : {
|
||||
KEEP(*(.head))
|
||||
}
|
||||
. = ALIGN(0x1000);
|
||||
.text : { *(.text) *(.text.*) *(.rodata) *(.rodata.*) }
|
||||
. = ALIGN(0x1000);
|
||||
.data : { *(.data) *(.data.*) *(.got) *(.toc) }
|
||||
. = ALIGN(0x80);
|
||||
__bss_start = .;
|
||||
.bss : {
|
||||
*(.dynsbss)
|
||||
*(.sbss)
|
||||
*(.scommon)
|
||||
*(.dynbss)
|
||||
*(.bss)
|
||||
*(.common)
|
||||
*(.bss.*)
|
||||
}
|
||||
. = ALIGN(0x80);
|
||||
__bss_end = .;
|
||||
. = . + 0x4000;
|
||||
__stack_top = .;
|
||||
}
|
||||
Binary file not shown.
@ -0,0 +1,19 @@
|
||||
test 01:PASS
|
||||
test 02:PASS
|
||||
test 03:PASS
|
||||
test 04:PASS
|
||||
test 05:PASS
|
||||
test 06:PASS
|
||||
test 07:PASS
|
||||
test 08:PASS
|
||||
test 09:PASS
|
||||
test 10:PASS
|
||||
test 11:PASS
|
||||
test 12:PASS
|
||||
test 13:PASS
|
||||
test 14:PASS
|
||||
test 15:PASS
|
||||
test 16:PASS
|
||||
test 17:PASS
|
||||
test 18:PASS
|
||||
test 19:PASS
|
||||
Binary file not shown.
Loading…
Reference in New Issue