arm: mach-k3: am642_init: Add support for USB boot mode
Add support for identifying USB host and device boot modes
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210604163043.12811-3-a-govindraju@ti.com
diff --git a/arch/arm/mach-k3/am642_init.c b/arch/arm/mach-k3/am642_init.c
index a433702..1a2bc4b 100644
--- a/arch/arm/mach-k3/am642_init.c
+++ b/arch/arm/mach-k3/am642_init.c
@@ -192,8 +192,11 @@
case BACKUP_BOOT_DEVICE_UART:
return BOOT_DEVICE_UART;
- case BACKUP_BOOT_DEVICE_USB:
- return BOOT_DEVICE_USB;
+ case BACKUP_BOOT_DEVICE_DFU:
+ if (bkup_bootmode_cfg & MAIN_DEVSTAT_BACKUP_USB_MODE_MASK)
+ return BOOT_DEVICE_USB;
+ return BOOT_DEVICE_DFU;
+
case BACKUP_BOOT_DEVICE_ETHERNET:
return BOOT_DEVICE_ETHERNET;
@@ -245,6 +248,12 @@
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;
}
diff --git a/arch/arm/mach-k3/include/mach/am64_hardware.h b/arch/arm/mach-k3/include/mach/am64_hardware.h
index c368aa7..4ee41ad 100644
--- a/arch/arm/mach-k3/include/mach/am64_hardware.h
+++ b/arch/arm/mach-k3/include/mach/am64_hardware.h
@@ -30,6 +30,11 @@
#define MAIN_DEVSTAT_PRIMARY_MMC_PORT_SHIFT 2
#define MAIN_DEVSTAT_PRIMARY_MMC_PORT_MASK 0x04
+#define MAIN_DEVSTAT_PRIMARY_USB_MODE_SHIFT 1
+#define MAIN_DEVSTAT_PRIMARY_USB_MODE_MASK 0x02
+
+#define MAIN_DEVSTAT_BACKUP_USB_MODE_MASK 0x01
+
/*
* The CTRL_MMR and PADCFG_MMR memory space is divided into several
* equally-spaced partitions, so defining the partition size allows us to
diff --git a/arch/arm/mach-k3/include/mach/am64_spl.h b/arch/arm/mach-k3/include/mach/am64_spl.h
index 36826cf..607b09c 100644
--- a/arch/arm/mach-k3/include/mach/am64_spl.h
+++ b/arch/arm/mach-k3/include/mach/am64_spl.h
@@ -19,7 +19,8 @@
#define BOOT_DEVICE_MMC 0x08
#define BOOT_DEVICE_EMMC 0x09
-#define BOOT_DEVICE_USB 0x0A
+#define BOOT_DEVICE_USB 0x2A
+#define BOOT_DEVICE_DFU 0x0A
#define BOOT_DEVICE_GPMC_NOR 0x0C
#define BOOT_DEVICE_PCIE 0x0D
#define BOOT_DEVICE_XSPI 0x0E
@@ -32,12 +33,13 @@
#define BOOT_DEVICE_MMC2_2 0x1F
/* Backup BootMode devices */
-#define BACKUP_BOOT_DEVICE_USB 0x01
+#define BACKUP_BOOT_DEVICE_DFU 0x01
#define BACKUP_BOOT_DEVICE_UART 0x03
#define BACKUP_BOOT_DEVICE_ETHERNET 0x04
#define BACKUP_BOOT_DEVICE_MMC 0x05
#define BACKUP_BOOT_DEVICE_SPI 0x06
#define BACKUP_BOOT_DEVICE_I2C 0x07
+#define BACKUP_BOOT_DEVICE_USB 0x09
#define K3_PRIMARY_BOOTMODE 0x0