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arm: mach-k3: am642_init: Add support for USB boot mode

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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
This commit is contained in:
Aswath Govindraju 2021-06-04 22:00:32 +05:30 • committed by Lokesh Vutla
parent 0c51509224
commit 3ae127c4e2
3 changed files with 20 additions and 4 deletions
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13
arch/arm/mach-k3/am642_init.c
View file

@ -192,8 +192,11 @@ static u32 __get_backup_bootmedia(u32 main_devstat)
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 @@ static u32 __get_primary_bootmedia(u32 main_devstat)
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;
}

5
arch/arm/mach-k3/include/mach/am64_hardware.h
View file

@ -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

6
arch/arm/mach-k3/include/mach/am64_spl.h
View file

@ -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