On OMAP platforms (like OMAP5) Linux kernel fails to detect a SATA device if it is used by U-Boot.
It happens because U-Boot does not reset SATA controller before boot.
Reset the controller on OS boot so that Linux will have a clean state to work with.
Signed-off-by: Dmitry Lifshitz lifshitz@compulab.co.il --- arch/arm/cpu/armv7/omap-common/boot-common.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/armv7/omap-common/boot-common.c b/arch/arm/cpu/armv7/omap-common/boot-common.c index cb18908..00a1082 100644 --- a/arch/arm/cpu/armv7/omap-common/boot-common.c +++ b/arch/arm/cpu/armv7/omap-common/boot-common.c @@ -9,12 +9,14 @@ */
#include <common.h> +#include <ahci.h> #include <spl.h> #include <asm/omap_common.h> #include <asm/arch/omap.h> #include <asm/arch/mmc_host_def.h> #include <asm/arch/sys_proto.h> #include <watchdog.h> +#include <scsi.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -143,3 +145,10 @@ void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) image_entry((u32 *)&gd->arch.omap_boot_params); } #endif + +#ifdef CONFIG_SCSI_AHCI_PLAT +void arch_preboot_os(void) +{ + ahci_reset(DWC_AHSATA_BASE); +} +#endif