arm: mach-k3: am62a7: Provide a way to obtain boot device for non SPLs

Introduce get_boot_device() to obtain the booting device. Make it also
available for non SPL builds so u-boot can also know the device it
is booting from.

Signed-off-by: Garrett Giordano <ggiordano@phytec.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Andrew Davis <afd@ti.com>

arch/arm/mach-k3/am62ax/Makefile

@@ -5,3 +5,4 @@
 
 obj-$(CONFIG_OF_SYSTEM_SETUP) += am62a7_fdt.o
 obj-$(CONFIG_XPL_BUILD) += am62a7_init.o
+obj-y += boot.o

arch/arm/mach-k3/am62ax/am62a7_init.c

@@ -171,102 +171,7 @@ void board_init_f(ulong dummy)
 	debug("am62a_init: %s done\n", __func__);
 }
 
-static u32 __get_backup_bootmedia(u32 devstat)
-{
-	u32 bkup_bootmode = (devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_MASK) >>
-				MAIN_DEVSTAT_BACKUP_BOOTMODE_SHIFT;
-	u32 bkup_bootmode_cfg =
-			(devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_MASK) >>
-				MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_SHIFT;
-
-	switch (bkup_bootmode) {
-	case BACKUP_BOOT_DEVICE_UART:
-		return BOOT_DEVICE_UART;
-
-	case BACKUP_BOOT_DEVICE_USB:
-		return BOOT_DEVICE_USB;
-
-	case BACKUP_BOOT_DEVICE_ETHERNET:
-		return BOOT_DEVICE_ETHERNET;
-
-	case BACKUP_BOOT_DEVICE_MMC:
-		if (bkup_bootmode_cfg)
-			return BOOT_DEVICE_MMC2;
-		return BOOT_DEVICE_MMC1;
-
-	case BACKUP_BOOT_DEVICE_SPI:
-		return BOOT_DEVICE_SPI;
-
-	case BACKUP_BOOT_DEVICE_I2C:
-		return BOOT_DEVICE_I2C;
-
-	case BACKUP_BOOT_DEVICE_DFU:
-		if (bkup_bootmode_cfg & MAIN_DEVSTAT_BACKUP_USB_MODE_MASK)
-			return BOOT_DEVICE_USB;
-		return BOOT_DEVICE_DFU;
-	};
-
-	return BOOT_DEVICE_RAM;
-}
-
-static u32 __get_primary_bootmedia(u32 devstat)
-{
-	u32 bootmode = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
-				MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
-	u32 bootmode_cfg = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_MASK) >>
-				MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_SHIFT;
-
-	switch (bootmode) {
-	case BOOT_DEVICE_OSPI:
-		fallthrough;
-	case BOOT_DEVICE_QSPI:
-		fallthrough;
-	case BOOT_DEVICE_XSPI:
-		fallthrough;
-	case BOOT_DEVICE_SPI:
-		return BOOT_DEVICE_SPI;
-
-	case BOOT_DEVICE_ETHERNET_RGMII:
-		fallthrough;
-	case BOOT_DEVICE_ETHERNET_RMII:
-		return BOOT_DEVICE_ETHERNET;
-
-	case BOOT_DEVICE_EMMC:
-		return BOOT_DEVICE_MMC1;
-
-	case BOOT_DEVICE_SPI_NAND:
-		return BOOT_DEVICE_SPINAND;
-
-	case BOOT_DEVICE_MMC:
-		if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_PORT_MASK) >>
-				MAIN_DEVSTAT_PRIMARY_MMC_PORT_SHIFT)
-			return BOOT_DEVICE_MMC2;
-		return BOOT_DEVICE_MMC1;
-
-	case BOOT_DEVICE_DFU:
-		if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_USB_MODE_MASK) >>
-		    MAIN_DEVSTAT_PRIMARY_USB_MODE_SHIFT)
-			return BOOT_DEVICE_USB;
-		return BOOT_DEVICE_DFU;
-
-	case BOOT_DEVICE_NOBOOT:
-		return BOOT_DEVICE_RAM;
-	}
-
-	return bootmode;
-}
-
 u32 spl_boot_device(void)
 {
-	u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
+	return get_boot_device();
-	u32 bootmedia;
-
-	if (bootindex == K3_PRIMARY_BOOTMODE)
-		bootmedia = __get_primary_bootmedia(devstat);
-	else
-		bootmedia = __get_backup_bootmedia(devstat);
-
-	debug("am62a_init: %s: devstat = 0x%x bootmedia = 0x%x bootindex = %d\n",
-	       __func__, devstat, bootmedia, bootindex);
-	return bootmedia;
 }

arch/arm/mach-k3/am62ax/boot.c

@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/am62a_spl.h>
+
+static u32 __get_backup_bootmedia(u32 devstat)
+{
+	u32 bkup_bootmode = (devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_MASK) >>
+				MAIN_DEVSTAT_BACKUP_BOOTMODE_SHIFT;
+	u32 bkup_bootmode_cfg =
+			(devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_MASK) >>
+				MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_SHIFT;
+
+	switch (bkup_bootmode) {
+	case BACKUP_BOOT_DEVICE_UART:
+		return BOOT_DEVICE_UART;
+
+	case BACKUP_BOOT_DEVICE_USB:
+		return BOOT_DEVICE_USB;
+
+	case BACKUP_BOOT_DEVICE_ETHERNET:
+		return BOOT_DEVICE_ETHERNET;
+
+	case BACKUP_BOOT_DEVICE_MMC:
+		if (bkup_bootmode_cfg)
+			return BOOT_DEVICE_MMC2;
+		return BOOT_DEVICE_MMC1;
+
+	case BACKUP_BOOT_DEVICE_SPI:
+		return BOOT_DEVICE_SPI;
+
+	case BACKUP_BOOT_DEVICE_I2C:
+		return BOOT_DEVICE_I2C;
+
+	case BACKUP_BOOT_DEVICE_DFU:
+		if (bkup_bootmode_cfg & MAIN_DEVSTAT_BACKUP_USB_MODE_MASK)
+			return BOOT_DEVICE_USB;
+		return BOOT_DEVICE_DFU;
+	};
+
+	return BOOT_DEVICE_RAM;
+}
+
+static u32 __get_primary_bootmedia(u32 devstat)
+{
+	u32 bootmode = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
+				MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
+	u32 bootmode_cfg = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_MASK) >>
+				MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_SHIFT;
+
+	switch (bootmode) {
+	case BOOT_DEVICE_OSPI:
+		fallthrough;
+	case BOOT_DEVICE_QSPI:
+		fallthrough;
+	case BOOT_DEVICE_XSPI:
+		fallthrough;
+	case BOOT_DEVICE_SPI:
+		return BOOT_DEVICE_SPI;
+
+	case BOOT_DEVICE_ETHERNET_RGMII:
+		fallthrough;
+	case BOOT_DEVICE_ETHERNET_RMII:
+		return BOOT_DEVICE_ETHERNET;
+
+	case BOOT_DEVICE_EMMC:
+		return BOOT_DEVICE_MMC1;
+
+	case BOOT_DEVICE_SPI_NAND:
+		return BOOT_DEVICE_SPINAND;
+
+	case BOOT_DEVICE_MMC:
+		if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_PORT_MASK) >>
+				MAIN_DEVSTAT_PRIMARY_MMC_PORT_SHIFT)
+			return BOOT_DEVICE_MMC2;
+		return BOOT_DEVICE_MMC1;
+
+	case BOOT_DEVICE_DFU:
+		if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_USB_MODE_MASK) >>
+		    MAIN_DEVSTAT_PRIMARY_USB_MODE_SHIFT)
+			return BOOT_DEVICE_USB;
+		return BOOT_DEVICE_DFU;
+
+	case BOOT_DEVICE_NOBOOT:
+		return BOOT_DEVICE_RAM;
+	}
+
+	return bootmode;
+}
+
+u32 get_boot_device(void)
+{
+	u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
+	u32 bootmode = *(u32 *)(K3_BOOT_PARAM_TABLE_INDEX_OCRAM);
+	u32 bootmedia;
+
+	if (bootmode == K3_PRIMARY_BOOTMODE)
+		bootmedia = __get_primary_bootmedia(devstat);
+	else
+		bootmedia = __get_backup_bootmedia(devstat);
+
+	debug("%s: devstat = 0x%x bootmedia = 0x%x bootmode = %d\n",
+	      __func__, devstat, bootmedia, bootmode);
+
+	return bootmedia;
+}