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/fdt.c | |
| parent | 69c7826759a69456df2a47fa4ef5dde19ab87e62 (diff) | |
| download | u-boot-6d2b9da19cbfe0b7da7e9ae0bf2a1a000f2e2804.tar.gz | |
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/fdt.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/fdt.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c index a0a9b4c5ae..d54527aa47 100644 --- a/arch/powerpc/cpu/mpc85xx/fdt.c +++ b/arch/powerpc/cpu/mpc85xx/fdt.c @@ -220,12 +220,19 @@ static inline void ft_fixup_l2cache(void *blob) /* we dont bother w/L3 since no platform of this type has one */ } -#elif defined(CONFIG_BACKSIDE_L2_CACHE) +#elif defined(CONFIG_BACKSIDE_L2_CACHE) || \ + defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2) static inline void ft_fixup_l2cache(void *blob) { int off, l2_off, l3_off = -1; u32 *ph; +#ifdef CONFIG_BACKSIDE_L2_CACHE u32 l2cfg0 = mfspr(SPRN_L2CFG0); +#else + struct ccsr_cluster_l2 *l2cache = + (struct ccsr_cluster_l2 __iomem *)(CONFIG_SYS_FSL_CLUSTER_1_L2); + u32 l2cfg0 = in_be32(&l2cache->l2cfg0); +#endif u32 size, line_size, num_ways, num_sets; int has_l2 = 1; @@ -257,7 +264,12 @@ static inline void ft_fixup_l2cache(void *blob) if (has_l2) { #ifdef CONFIG_SYS_CACHE_STASHING u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0); +#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2 + /* Only initialize every eighth thread */ + if (reg && !((*reg) % 8)) +#else if (reg) +#endif fdt_setprop_cell(blob, l2_off, "cache-stash-id", (*reg * 2) + 32 + 1); #endif |