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authorTimur Tabi <timur@freescale.com>2011-11-21 17:10:23 -0600
committerKumar Gala <galak@kernel.crashing.org>2011-11-29 08:48:06 -0600
commitfbc20aab119b70119a2c1db7dfbecb4a6ee0f6a5 (patch)
treec0b8dee0c09e028f869aca7a6122967787c02e2b /arch
parent3e0529f742e893653848494ffb9f7cd0d91304bf (diff)
powerpc/85xx: always implement the work-around for Erratum SATA_A001
On the P1022/P1013, the work-around for erratum SATA_A001 was implemented only if U-Boot initializes SATA, but SATA is not initialized by default. So move the work-around to the CPU initialization function, so that it's always executed on the SOCs that need it. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/cpu/mpc85xx/cpu_init.c37
1 files changed, 33 insertions, 4 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c
index b9a8193759..27aa038d58 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c
@@ -37,12 +37,15 @@
#include <asm/mmu.h>
#include <asm/fsl_law.h>
#include <asm/fsl_serdes.h>
+#include <linux/compiler.h>
#include "mp.h"
#ifdef CONFIG_SYS_QE_FW_IN_NAND
#include <nand.h>
#include <errno.h>
#endif
+#include "../../../../drivers/block/fsl_sata.h"
+
DECLARE_GLOBAL_DATA_PTR;
extern void srio_init(void);
@@ -301,6 +304,7 @@ __attribute__((weak, alias("__fsl_serdes__init"))) void fsl_serdes_init(void);
*/
int cpu_init_r(void)
{
+ __maybe_unused u32 svr = get_svr();
#ifdef CONFIG_SYS_LBC_LCRR
volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
#endif
@@ -316,10 +320,9 @@ int cpu_init_r(void)
#if defined(CONFIG_L2_CACHE)
volatile ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
volatile uint cache_ctl;
- uint svr, ver;
+ uint ver;
u32 l2siz_field;
- svr = get_svr();
ver = SVR_SOC_VER(svr);
asm("msync;isync");
@@ -401,8 +404,8 @@ int cpu_init_r(void)
puts("enabled\n");
}
#elif defined(CONFIG_BACKSIDE_L2_CACHE)
- if ((SVR_SOC_VER(get_svr()) == SVR_P2040) ||
- (SVR_SOC_VER(get_svr()) == SVR_P2040_E)) {
+ if ((SVR_SOC_VER(svr) == SVR_P2040) ||
+ (SVR_SOC_VER(svr) == SVR_P2040_E)) {
puts("N/A\n");
goto skip_l2;
}
@@ -488,6 +491,32 @@ skip_l2:
fman_enet_init();
#endif
+#if defined(CONFIG_FSL_SATA_V2) && defined(CONFIG_FSL_SATA_ERRATUM_A001)
+ /*
+ * For P1022/1013 Rev1.0 silicon, after power on SATA host
+ * controller is configured in legacy mode instead of the
+ * expected enterprise mode. Software needs to clear bit[28]
+ * of HControl register to change to enterprise mode from
+ * legacy mode. We assume that the controller is offline.
+ */
+ if (IS_SVR_REV(svr, 1, 0) &&
+ ((SVR_SOC_VER(svr) == SVR_P1022) ||
+ (SVR_SOC_VER(svr) == SVR_P1022_E) ||
+ (SVR_SOC_VER(svr) == SVR_P1013) ||
+ (SVR_SOC_VER(svr) == SVR_P1013_E))) {
+ fsl_sata_reg_t *reg;
+
+ /* first SATA controller */
+ reg = (void *)CONFIG_SYS_MPC85xx_SATA1_ADDR;
+ clrbits_le32(&reg->hcontrol, HCONTROL_ENTERPRISE_EN);
+
+ /* second SATA controller */
+ reg = (void *)CONFIG_SYS_MPC85xx_SATA2_ADDR;
+ clrbits_le32(&reg->hcontrol, HCONTROL_ENTERPRISE_EN);
+ }
+#endif
+
+
return 0;
}