diff options
Diffstat (limited to 'cpu/mpc85xx/cpu_init.c')
| -rw-r--r-- | cpu/mpc85xx/cpu_init.c | 47 |
1 files changed, 30 insertions, 17 deletions
diff --git a/cpu/mpc85xx/cpu_init.c b/cpu/mpc85xx/cpu_init.c index 736aef1..4feb751 100644 --- a/cpu/mpc85xx/cpu_init.c +++ b/cpu/mpc85xx/cpu_init.c @@ -261,37 +261,50 @@ int cpu_init_r(void) volatile uint cache_ctl; uint svr, ver; uint l2srbar; + u32 l2siz_field; svr = get_svr(); ver = SVR_SOC_VER(svr); asm("msync;isync"); cache_ctl = l2cache->l2ctl; + l2siz_field = (cache_ctl >> 28) & 0x3; - switch (cache_ctl & 0x30000000) { - case 0x20000000: - if (ver == SVR_8548 || ver == SVR_8548_E || - ver == SVR_8544 || ver == SVR_8568_E) { - puts ("512 KB "); - /* set L2E=1, L2I=1, & L2SRAM=0 */ - cache_ctl = 0xc0000000; + switch (l2siz_field) { + case 0x0: + printf(" unknown size (0x%08x)\n", cache_ctl); + return -1; + break; + case 0x1: + if (ver == SVR_8540 || ver == SVR_8560 || + ver == SVR_8541 || ver == SVR_8541_E || + ver == SVR_8555 || ver == SVR_8555_E) { + puts("128 KB "); + /* set L2E=1, L2I=1, & L2BLKSZ=1 (128 Kbyte) */ + cache_ctl = 0xc4000000; } else { puts("256 KB "); + cache_ctl = 0xc0000000; /* set L2E=1, L2I=1, & L2SRAM=0 */ + } + break; + case 0x2: + if (ver == SVR_8540 || ver == SVR_8560 || + ver == SVR_8541 || ver == SVR_8541_E || + ver == SVR_8555 || ver == SVR_8555_E) { + puts("256 KB "); /* set L2E=1, L2I=1, & L2BLKSZ=2 (256 Kbyte) */ cache_ctl = 0xc8000000; + } else { + puts ("512 KB "); + /* set L2E=1, L2I=1, & L2SRAM=0 */ + cache_ctl = 0xc0000000; } break; - case 0x10000000: - puts("256 KB "); - if (ver == SVR_8544 || ver == SVR_8544_E) { - cache_ctl = 0xc0000000; /* set L2E=1, L2I=1, & L2SRAM=0 */ - } + case 0x3: + puts("1024 KB "); + /* set L2E=1, L2I=1, & L2SRAM=0 */ + cache_ctl = 0xc0000000; break; - case 0x30000000: - case 0x00000000: - default: - printf(" unknown size (0x%08x)\n", cache_ctl); - return -1; } if (l2cache->l2ctl & 0x80000000) { |