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>

3 files changed, 34 insertions, 25 deletions

diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c
index b9a8193..27aa038 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;
 }
 
diff --git a/drivers/block/fsl_sata.c b/drivers/block/fsl_sata.c
index 6b35173..3026ade 100644
--- a/drivers/block/fsl_sata.c
+++ b/drivers/block/fsl_sata.c
@@ -197,27 +197,6 @@ int init_sata(int dev)
 	/* Wait the controller offline */
 	ata_wait_register(&reg->hstatus, HSTATUS_ONOFF, 0, 1000);
 
-#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.
-	 */
-	{
-		u32 svr = get_svr();
-		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))) {
-			out_le32(&reg->hstatus, 0x20000000);
-			out_le32(&reg->hcontrol, 0x00000100);
-		}
-	}
-#endif
-
 	/* Set the command header base address to CHBA register to tell DMA */
 	out_le32(&reg->chba, (u32)cmd_hdr & ~0x3);
 
diff --git a/drivers/block/fsl_sata.h b/drivers/block/fsl_sata.h
index 576efaf..cecff68 100644
--- a/drivers/block/fsl_sata.h
+++ b/drivers/block/fsl_sata.h
@@ -103,6 +103,7 @@ typedef struct fsl_sata_reg {
 */
 #define HCONTROL_ONOFF			0x80000000 /* Online or offline request */
 #define HCONTROL_FORCE_OFFLINE		0x40000000 /* Force offline request */
+#define HCONTROL_ENTERPRISE_EN		0x10000000 /* Enterprise mode enabled */
 #define HCONTROL_HDR_SNOOP		0x00000400 /* Command header snoop */
 #define HCONTROL_PMP_ATTACHED		0x00000200 /* Port multiplier attached */