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pico-imx7d: Add Falcon mode support 

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

As pico-imx7d 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: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
This commit is contained in:
Fabio Estevam 2018-06-16 15:26:57 -03:00 committed by Otavio Salvador
parent 8800626580
commit ceb9087434
3 changed files with 22 additions and 0 deletions
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8
board/technexion/pico-imx7d/spl.c
View File

@ -13,6 +13,14 @@
#include <spl.h>
#if defined(CONFIG_SPL_BUILD)
#ifdef CONFIG_SPL_OS_BOOT
int spl_start_uboot(void)
{
return 0;
}
#endif
static struct ddrc ddrc_regs_val = {
.mstr = 0x01040001,
.rfshtmg = 0x00400046,

2
configs/pico-imx7d_defconfig
View File

@ -21,6 +21,8 @@ CONFIG_SPL_USB_SDP_SUPPORT=y
CONFIG_CMD_BOOTMENU=y
# CONFIG_CMD_IMI is not set
# CONFIG_CMD_XIMG is not set
CONFIG_CMD_SPL=y
CONFIG_CMD_SPL_WRITE_SIZE=0x20000
CONFIG_CMD_DFU=y
CONFIG_CMD_GPIO=y
CONFIG_CMD_GPT=y

12
include/configs/pico-imx7d.h
View File

@ -12,6 +12,18 @@
#include "imx7_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
/* Size of malloc() pool */
#define CONFIG_SYS_MALLOC_LEN (32 * SZ_1M)