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pico-imx6ul: Add Falcon mode support

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Falcon mode boots the kernel directly from SPL, without loading
the full U-Boot.

As pico-imx6ul does not have a GPIO for selecting Falcon versus normal
mode, enter in Falcon mode when the customer selects the
CONFIG_SPL_OS_BOOT option in menuconfig.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
This commit is contained in:
Otavio Salvador 2018-09-13 16:57:05 -03:00 committed by Stefano Babic
parent 1b5f4dc9e6
commit 9ddd1cd596
3 changed files with 22 additions and 0 deletions
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8
board/technexion/pico-imx6ul/spl.c
View file

@ -14,6 +14,14 @@
#include <spl.h>
#if defined(CONFIG_SPL_BUILD)
#ifdef CONFIG_SPL_OS_BOOT
int spl_start_uboot(void)
{
return 0;
}
#endif
#include <asm/arch/mx6-ddr.h>
static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {

2
configs/pico-imx6ul_defconfig
View file

@ -21,6 +21,8 @@ CONFIG_SPL_USB_HOST_SUPPORT=y
CONFIG_SPL_USB_GADGET_SUPPORT=y
CONFIG_SPL_USB_SDP_SUPPORT=y
CONFIG_CMD_BOOTMENU=y
CONFIG_CMD_SPL=y
CONFIG_CMD_SPL_WRITE_SIZE=0x20000
CONFIG_CMD_MEMTEST=y
CONFIG_CMD_DFU=y
# CONFIG_CMD_FLASH is not set

12
include/configs/pico-imx6ul.h
View file

@ -14,6 +14,18 @@
#include <asm/mach-imx/gpio.h>
#include "imx6_spl.h"
#ifdef CONFIG_SPL_OS_BOOT
/* Falcon Mode */
#define CONFIG_SPL_FS_LOAD_ARGS_NAME "args"
#define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage"
#define CONFIG_SYS_SPL_ARGS_ADDR 0x88000000
/* Falcon Mode - MMC support: args@1MB kernel@2MB */
#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x800 /* 1MB */
#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS (CONFIG_CMD_SPL_WRITE_SIZE / 512)
#define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1000 /* 2MB */
#endif
/* Network support */
#define CONFIG_FEC_MXC