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powerpc/cache: add cache flush operation for various e500

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Various e500 core have different cache architecture, so they
need different cache flush operations. Therefore, add a callback
function cpu_flush_caches to the struct cpu_spec. The cache flush
operation for the specific kind of e500 is selected at init time.
The callback function will flush all caches inside the current cpu.

Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
Signed-off-by: Tang Yuantian <Yuantian.Tang@feescale.com>
Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
chenhui zhao 2015-11-20 17:13:58 +08:00 • committed by Scott Wood
parent ebb9d30a6a
commit e7affb1dba
7 changed files with 128 additions and 78 deletions
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8
arch/powerpc/include/asm/cputable.h
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@ -43,6 +43,11 @@ extern int machine_check_e500(struct pt_regs *regs);
extern int machine_check_e200(struct pt_regs *regs);
extern int machine_check_47x(struct pt_regs *regs);
extern void cpu_down_flush_e500v2(void);
extern void cpu_down_flush_e500mc(void);
extern void cpu_down_flush_e5500(void);
extern void cpu_down_flush_e6500(void);
/* NOTE WELL: Update identify_cpu() if fields are added or removed! */
struct cpu_spec {
/* CPU is matched via (PVR & pvr_mask) == pvr_value */
@ -59,6 +64,9 @@ struct cpu_spec {
unsigned int icache_bsize;
unsigned int dcache_bsize;
/* flush caches inside the current cpu */
void (*cpu_down_flush)(void);
/* number of performance monitor counters */
unsigned int num_pmcs;
enum powerpc_pmc_type pmc_type;