[U-Boot] [PATCH 1/2] arm: K3: am654: Choose MMC boot device based on boot port

Andrew F. Davis
2018-10-03T15:03:22Z

For most devices the boot mode maps directly to the boot
device. For MMC this is not the case as we have two MMC
boot modes and two MMC boot devices (ports). Check the
boot port to determine which MMC device was our boot
device. Make this change for both primary and secondary
boot modes.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
arch/arm/mach-k3/am6_init.c | 21 +++++++++++++++++++-
arch/arm/mach-k3/include/mach/am6_hardware.h | 6 ++++++
2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-k3/am6_init.c b/arch/arm/mach-k3/am6_init.c
index 8a3a99f23a..b2388b98ec 100644
--- a/arch/arm/mach-k3/am6_init.c
+++ b/arch/arm/mach-k3/am6_init.c
@@ -85,7 +85,13 @@ static u32 __get_backup_bootmedia(u32 devstat)
case BACKUP_BOOT_DEVICE_ETHERNET:
return BOOT_DEVICE_ETHERNET;
case BACKUP_BOOT_DEVICE_MMC2:
+ {
+ u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_MASK) >>
+ CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT;
+ if (port == 0x0)
+ return BOOT_DEVICE_MMC1;
return BOOT_DEVICE_MMC2;
+ }
case BACKUP_BOOT_DEVICE_SPI:
return BOOT_DEVICE_SPI;
case BACKUP_BOOT_DEVICE_HYPERFLASH:
@@ -99,11 +105,24 @@ static u32 __get_backup_bootmedia(u32 devstat)

static u32 __get_primary_bootmedia(u32 devstat)
{
- u32 bootmode = devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK;
+ u32 bootmode = (devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK) >>
+ CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT;

if (bootmode == BOOT_DEVICE_OSPI || bootmode == BOOT_DEVICE_QSPI)
bootmode = BOOT_DEVICE_SPI;

+ if (bootmode == BOOT_DEVICE_MMC2) {
+ u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_MMC_PORT_MASK) >>
+ CTRLMMR_MAIN_DEVSTAT_MMC_PORT_SHIFT;
+ if (port == 0x0)
+ bootmode = BOOT_DEVICE_MMC1;
+ } else if (bootmode == BOOT_DEVICE_MMC1) {
+ u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_MASK) >>
+ CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_SHIFT;
+ if (port == 0x1)
+ bootmode = BOOT_DEVICE_MMC2;
+ }
+
return bootmode;
}

diff --git a/arch/arm/mach-k3/include/mach/am6_hardware.h b/arch/arm/mach-k3/include/mach/am6_hardware.h
index e4b78f8617..b5244609af 100644
--- a/arch/arm/mach-k3/include/mach/am6_hardware.h
+++ b/arch/arm/mach-k3/include/mach/am6_hardware.h
@@ -16,6 +16,12 @@
#define CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT 0
#define CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_MASK GENMASK(6, 4)
#define CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT 4
+#define CTRLMMR_MAIN_DEVSTAT_MMC_PORT_MASK GENMASK(12, 12)
+#define CTRLMMR_MAIN_DEVSTAT_MMC_PORT_SHIFT 12
+#define CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_MASK GENMASK(14, 14)
+#define CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_SHIFT 14
+#define CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_MASK GENMASK(17, 17)
+#define CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT 12

#define WKUP_CTRL_MMR0_BASE 0x43000000
#define MCU_CTRL_MMR0_BASE 0x40f00000
--
2.18.0