diff options
| author | Kumar Gala <galak@kernel.crashing.org> | 2011-01-13 01:56:18 -0600 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-01-14 01:32:22 -0600 |
| commit | 868da5936e40b8685c813c1eb31eed629eaae295 (patch) | |
| tree | fb0117876a75d0fa775e129d66366f20bf6a5915 /arch | |
| parent | 1d2c2a62e328db22c38e3dfb3c0a8a373333471b (diff) | |
powerpc/85xx: Add the workaround for erratum CPC-A003 (enable on P4080)
CoreNet Platform Cache single-bit data error scrubbing will cause data
corruption. Disable the feature to workaround the issue.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cmd_errata.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cpu_init.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/immap_85xx.h | 1 |
3 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c index ae6af4f967..bf70d2d895 100644 --- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c +++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c @@ -62,6 +62,9 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) #ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002 puts("Work-around for Erratum CPC-A002 enabled\n"); #endif +#ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A003 + puts("Work-around for Erratum CPC-A003 enabled\n"); +#endif return 0; } diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index c822d871ae..8ece970097 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -145,6 +145,9 @@ static void enable_cpc(void) #ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002 setbits_be32(&cpc->cpchdbcr0, CPC_HDBCR0_TAG_ECC_SCRUB_DIS); #endif +#ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A003 + setbits_be32(&cpc->cpchdbcr0, CPC_HDBCR0_DATA_ECC_SCRUB_DIS); +#endif out_be32(&cpc->cpccsr0, CPC_CSR0_CE | CPC_CSR0_PE); /* Read back to sync write */ diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h index 6b19ee8586..b96dec7cef 100644 --- a/arch/powerpc/include/asm/immap_85xx.h +++ b/arch/powerpc/include/asm/immap_85xx.h @@ -1620,6 +1620,7 @@ typedef struct cpc_corenet { #define CPC_ERRDIS_TMHITDIS 0x00000080 /* multi-way hit disable */ #define CPC_HDBCR0_CDQ_SPEC_DIS 0x08000000 #define CPC_HDBCR0_TAG_ECC_SCRUB_DIS 0x01000000 +#define CPC_HDBCR0_DATA_ECC_SCRUB_DIS 0x00400000 #endif /* CONFIG_SYS_FSL_CPC */ /* Global Utilities Block */ |