diff options
| author | York Sun <yorksun@freescale.com> | 2012-10-08 07:44:08 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2012-10-22 14:31:15 -0500 |
| commit | 6d2b9da19cbfe0b7da7e9ae0bf2a1a000f2e2804 (patch) | |
| tree | 0fa435d86fef19ff6a83eedcc6c1c1f26527f8c5 /arch/powerpc/cpu/mpc85xx/cpu_init.c | |
| parent | 69c7826759a69456df2a47fa4ef5dde19ab87e62 (diff) | |
powerpc/mpc85xx: Enable L2 at the beginning of U-boot for E6500
Using E6500 L1 cache as initram requires L2 cache enabled.
Add l2-cache cluster enabling.
Setup stash id for L1 cache as (coreID) * 2 + 32 + 0
Setup stash id for L2 cache as (cluster) * 2 + 32 + 1
Stash id for L2 is only set for Chassis 2.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/cpu_init.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cpu_init.c | 50 |
1 files changed, 48 insertions, 2 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index ba558dedd7..e82c9517fe 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -295,6 +295,43 @@ static void __fsl_serdes__init(void) } __attribute__((weak, alias("__fsl_serdes__init"))) void fsl_serdes_init(void); +#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2 +int enable_cluster_l2(void) +{ + int i = 0; + u32 cluster; + ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); + struct ccsr_cluster_l2 __iomem *l2cache; + + cluster = in_be32(&gur->tp_cluster[i].lower); + if (cluster & TP_CLUSTER_EOC) + return 0; + + /* The first cache has already been set up, so skip it */ + i++; + + /* Look through the remaining clusters, and set up their caches */ + do { + l2cache = (void __iomem *)(CONFIG_SYS_FSL_CLUSTER_1_L2 + i * 0x40000); + cluster = in_be32(&gur->tp_cluster[i].lower); + + /* set stash ID to (cluster) * 2 + 32 + 1 */ + clrsetbits_be32(&l2cache->l2csr1, 0xff, 32 + i * 2 + 1); + + printf("enable l2 for cluster %d %p\n", i, l2cache); + + out_be32(&l2cache->l2csr0, L2CSR0_L2FI|L2CSR0_L2LFC); + while ((in_be32(&l2cache->l2csr0) & + (L2CSR0_L2FI|L2CSR0_L2LFC)) != 0) + ; + out_be32(&l2cache->l2csr0, L2CSR0_L2E); + i++; + } while (!(cluster & TP_CLUSTER_EOC)); + + return 0; +} +#endif + /* * Initialize L2 as cache. * @@ -306,7 +343,12 @@ int cpu_init_r(void) { __maybe_unused u32 svr = get_svr(); #ifdef CONFIG_SYS_LBC_LCRR - volatile fsl_lbc_t *lbc = LBC_BASE_ADDR; + fsl_lbc_t *lbc = (void __iomem *)LBC_BASE_ADDR; +#endif +#ifdef CONFIG_L2_CACHE + ccsr_l2cache_t *l2cache = (void __iomem *)CONFIG_SYS_MPC85xx_L2_ADDR; +#elif defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2) + struct ccsr_cluster_l2 * l2cache = (void __iomem *)CONFIG_SYS_FSL_CLUSTER_1_L2; #endif #if defined(CONFIG_SYS_P4080_ERRATUM_CPU22) || \ @@ -356,7 +398,6 @@ int cpu_init_r(void) puts ("L2: "); #if defined(CONFIG_L2_CACHE) - volatile ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR; volatile uint cache_ctl; uint ver; u32 l2siz_field; @@ -467,6 +508,11 @@ int cpu_init_r(void) } skip_l2: +#elif defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2) + if (l2cache->l2csr0 & L2CSR0_L2E) + printf("%d KB enabled\n", (l2cache->l2cfg0 & 0x3fff) * 64); + + enable_cluster_l2(); #else puts("disabled\n"); #endif |