microwatt

Author	SHA1	Message	Date
Paul Mackerras	c9e838b656	Remove support for lq, stq, lqarx and stqcx. They are optional in SFFS (scalar fixed-point and floating-point subset), are not needed for running Linux, and add complexity, so remove them. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>	3 years ago
Paul Mackerras	18120f153d	MMU: Implement a vestigial partition table This implements a 1-entry partition table, so that instead of getting the process table base address from the PRTBL SPR, the MMU now reads the doubleword pointed to by the PTCR register plus 8 to get the process table base address. The partition table entry is cached. Having the PTCR and the vestigial partition table reduces the amount of software change required in Linux for Microwatt support. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>	4 years ago
Paul Mackerras	ec5730a75a	tests: Add tests for lq/stq and lqarx/stqcx. Lq and stq are tested in both BE and LE modes (though only 64-bit mode) by the 'modes' test. Lqarx and stqcx. are tested by the 'reservation' test in LE mode mode (64-bit). Signed-off-by: Paul Mackerras <paulus@ozlabs.org>	4 years ago
Paul Mackerras	371fd4cc20	tests: Add tests for 32-bit and big-endian modes Signed-off-by: Paul Mackerras <paulus@ozlabs.org>	4 years ago