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mx6sabresd: Add Falcon mode support

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Allow i.MX6Q Sabre SD to load the kernel and dtb via SPL in Falcon mode.

Based on the Falcon mode code for MX6 Gateworks Ventana board.

Signed-off-by: Diego Dorta <diego.dorta@nxp.com>
This commit is contained in:
Diego Dorta 2016-10-11 11:09:27 -03:00 committed by Stefano Babic
parent 940afa4e54
commit d96796ca23
2 changed files with 24 additions and 0 deletions
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12
board/freescale/mx6sabresd/mx6sabresd.c
View file

@ -57,6 +57,8 @@ DECLARE_GLOBAL_DATA_PTR;
#define DISP0_PWR_EN IMX_GPIO_NR(1, 21)
#define KEY_VOL_UP IMX_GPIO_NR(1, 4)
int dram_init(void)
{
gd->ram_size = imx_ddr_size();
@ -682,6 +684,16 @@ int checkboard(void)
#include <spl.h>
#include <libfdt.h>
#ifdef CONFIG_SPL_OS_BOOT
int spl_start_uboot(void)
{
gpio_direction_input(KEY_VOL_UP);
/* Only enter in Falcon mode if KEY_VOL_UP is pressed */
return gpio_get_value(KEY_VOL_UP);
}
#endif
static void ccgr_init(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;

12
include/configs/mx6sabresd.h
View file

@ -11,6 +11,7 @@
#ifdef CONFIG_SPL
#include "imx6_spl.h"
#undef CONFIG_SPL_EXT_SUPPORT
#endif
#define CONFIG_MACH_TYPE 3980
@ -22,6 +23,17 @@
#include "mx6sabre_common.h"
/* Falcon Mode */
#define CONFIG_CMD_SPL
#define CONFIG_SPL_OS_BOOT
#define CONFIG_SYS_SPL_ARGS_ADDR 0x18000000
#define CONFIG_CMD_SPL_WRITE_SIZE (128 * SZ_1K)
/* 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 */
#define CONFIG_SYS_FSL_USDHC_NUM 3
#if defined(CONFIG_ENV_IS_IN_MMC)
#define CONFIG_SYS_MMC_ENV_DEV 1 /* SDHC3 */