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| author | Kumar Gala <galak@kernel.crashing.org> | 2011-01-13 01:54:01 -0600 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-01-14 01:32:22 -0600 |
| commit | 1d2c2a62e328db22c38e3dfb3c0a8a373333471b (patch) | |
| tree | 4c1654c9b72778d02b19cddb926c61fa2405e2c5 /arch | |
| parent | 7c57f3e85970819e72e45cdb89d6dfbb896d557b (diff) | |
| download | u-boot-imx-1d2c2a62e328db22c38e3dfb3c0a8a373333471b.zip u-boot-imx-1d2c2a62e328db22c38e3dfb3c0a8a373333471b.tar.gz u-boot-imx-1d2c2a62e328db22c38e3dfb3c0a8a373333471b.tar.bz2 | |
powerpc/85xx: Add the workaround for erratum CPC-A002 (enable on P4080)
CoreNet Platform Cache single-bit tag error scrubbing will cause tag
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 | 4 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cpu_init.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/immap_85xx.h | 3 |
3 files changed, 10 insertions, 1 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c index 4e2cb4a..ae6af4f 100644 --- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c +++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c @@ -59,6 +59,10 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) #if defined(CONFIG_SYS_FSL_ERRATUM_ESDHC136) puts("Work-around for Erratum ESDHC136 enabled\n"); #endif +#ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002 + puts("Work-around for Erratum CPC-A002 enabled\n"); +#endif + return 0; } diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index 354b222..c822d87 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -142,6 +142,10 @@ static void enable_cpc(void) u32 cpccfg0 = in_be32(&cpc->cpccfg0); size += CPC_CFG0_SZ_K(cpccfg0); +#ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002 + setbits_be32(&cpc->cpchdbcr0, CPC_HDBCR0_TAG_ECC_SCRUB_DIS); +#endif + out_be32(&cpc->cpccsr0, CPC_CSR0_CE | CPC_CSR0_PE); /* Read back to sync write */ in_be32(&cpc->cpccsr0); diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h index 30c64eb..6b19ee8 100644 --- a/arch/powerpc/include/asm/immap_85xx.h +++ b/arch/powerpc/include/asm/immap_85xx.h @@ -1,7 +1,7 @@ /* * MPC85xx Internal Memory Map * - * Copyright 2007-2010 Freescale Semiconductor, Inc. + * Copyright 2007-2011 Freescale Semiconductor, Inc. * * Copyright(c) 2002,2003 Motorola Inc. * Xianghua Xiao (x.xiao@motorola.com) @@ -1619,6 +1619,7 @@ typedef struct cpc_corenet { #define CPC_SRCR0_SRAMEN 0x00000001 #define CPC_ERRDIS_TMHITDIS 0x00000080 /* multi-way hit disable */ #define CPC_HDBCR0_CDQ_SPEC_DIS 0x08000000 +#define CPC_HDBCR0_TAG_ECC_SCRUB_DIS 0x01000000 #endif /* CONFIG_SYS_FSL_CPC */ /* Global Utilities Block */ |