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bsp/leon3: Add LEON3_L2CACHE_BASE

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This commit is contained in:
Sebastian Huber
2021-07-19 11:06:09 +02:00
parent de278269ac
commit 314945468c
3 changed files with 61 additions and 20 deletions
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60
bsps/sparc/leon3/start/cache.c
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@@ -11,7 +11,13 @@
#include <bsp/leon3.h>
#if !defined(LEON3_L2CACHE_BASE)
#include <grlib/ambapp.h>
#endif
#if !defined(LEON3_L2CACHE_BASE) || LEON3_L2CACHE_BASE != 0
#define LEON3_MAYBE_HAS_L2CACHE
#endif
#define CPU_CACHE_SUPPORT_PROVIDES_RANGE_FUNCTIONS
@@ -23,6 +29,7 @@
#define CPU_DATA_CACHE_ALIGNMENT 64
#if !defined(LEON3_L2CACHE_BASE)
static inline l2cache *get_l2c_regs(void)
{
struct ambapp_dev *adev;
@@ -42,26 +49,7 @@ static inline l2cache *get_l2c_regs(void)
return (l2cache *) DEV_TO_AHB(adev)->start[1];
}
static inline size_t get_l2_size(void)
{
l2cache *regs;
unsigned status;
unsigned ways;
unsigned set_size;
regs = get_l2c_regs();
if (regs == NULL) {
return 0;
}
status = grlib_load_32(&regs->l2cs);
ways = L2CACHE_L2CS_WAY_GET(status) + 1;
set_size = L2CACHE_L2CS_WAY_SIZE_GET(status) * 1024;
return ways * set_size;
}
#endif
static inline size_t get_l1_size(uint32_t l1_cfg)
{
@@ -71,10 +59,36 @@ static inline size_t get_l1_size(uint32_t l1_cfg)
return ways * wsize;
}
#if defined(LEON3_MAYBE_HAS_L2CACHE)
static inline size_t get_l2_size(void)
{
l2cache *regs;
unsigned status;
unsigned ways;
unsigned set_size;
#if defined(LEON3_L2CACHE_BASE)
regs = (l2cache *) LEON3_L2CACHE_BASE;
#else
regs = get_l2c_regs();
if (regs == NULL) {
return 0;
}
#endif
status = grlib_load_32(&regs->l2cs);
ways = L2CACHE_L2CS_WAY_GET(status) + 1;
set_size = L2CACHE_L2CS_WAY_SIZE_GET(status) * 1024;
return ways * set_size;
}
static inline size_t get_max_size(size_t a, size_t b)
{
return a < b ? b : a;
}
#endif
static inline size_t get_cache_size(uint32_t level, uint32_t l1_cfg)
{
@@ -82,14 +96,20 @@ static inline size_t get_cache_size(uint32_t level, uint32_t l1_cfg)
switch (level) {
case 0:
#if defined(LEON3_MAYBE_HAS_L2CACHE)
size = get_max_size(get_l1_size(l1_cfg), get_l2_size());
#else
size = get_l1_size(l1_cfg);
#endif
break;
case 1:
size = get_l1_size(l1_cfg);
break;
#if defined(LEON3_MAYBE_HAS_L2CACHE)
case 2:
size = get_l2_size();
break;
#endif
default:
size = 0;
break;