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mx23: SPL: Add boot mode support

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This adds the boot mode support for i.MX23 processors.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Otavio Salvador 2013-01-11 03:19:10 +00:00 committed by Stefano Babic
parent a8b2884d94
commit f942f7d962
1 changed files with 25 additions and 0 deletions
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25
arch/arm/cpu/arm926ejs/mxs/spl_boot.c
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@ -51,12 +51,21 @@ void early_delay(int delay)
#define MUX_CONFIG_BOOTMODE_PAD (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL)
static const iomux_cfg_t iomux_boot[] = {
#if defined(CONFIG_MX23)
MX23_PAD_LCD_D00__GPIO_1_0 | MUX_CONFIG_BOOTMODE_PAD,
MX23_PAD_LCD_D01__GPIO_1_1 | MUX_CONFIG_BOOTMODE_PAD,
MX23_PAD_LCD_D02__GPIO_1_2 | MUX_CONFIG_BOOTMODE_PAD,
MX23_PAD_LCD_D03__GPIO_1_3 | MUX_CONFIG_BOOTMODE_PAD,
MX23_PAD_LCD_D04__GPIO_1_4 | MUX_CONFIG_BOOTMODE_PAD,
MX23_PAD_LCD_D05__GPIO_1_5 | MUX_CONFIG_BOOTMODE_PAD,
#elif defined(CONFIG_MX28)
MX28_PAD_LCD_D00__GPIO_1_0 | MUX_CONFIG_BOOTMODE_PAD,
MX28_PAD_LCD_D01__GPIO_1_1 | MUX_CONFIG_BOOTMODE_PAD,
MX28_PAD_LCD_D02__GPIO_1_2 | MUX_CONFIG_BOOTMODE_PAD,
MX28_PAD_LCD_D03__GPIO_1_3 | MUX_CONFIG_BOOTMODE_PAD,
MX28_PAD_LCD_D04__GPIO_1_4 | MUX_CONFIG_BOOTMODE_PAD,
MX28_PAD_LCD_D05__GPIO_1_5 | MUX_CONFIG_BOOTMODE_PAD,
#endif
};
static uint8_t mxs_get_bootmode_index(void)
@ -68,6 +77,21 @@ static uint8_t mxs_get_bootmode_index(void)
/* Setup IOMUX of bootmode pads to GPIO */
mxs_iomux_setup_multiple_pads(iomux_boot, ARRAY_SIZE(iomux_boot));
#if defined(CONFIG_MX23)
/* Setup bootmode pins as GPIO input */
gpio_direction_input(MX23_PAD_LCD_D00__GPIO_1_0);
gpio_direction_input(MX23_PAD_LCD_D01__GPIO_1_1);
gpio_direction_input(MX23_PAD_LCD_D02__GPIO_1_2);
gpio_direction_input(MX23_PAD_LCD_D03__GPIO_1_3);
gpio_direction_input(MX23_PAD_LCD_D05__GPIO_1_5);
/* Read bootmode pads */
bootmode |= (gpio_get_value(MX23_PAD_LCD_D00__GPIO_1_0) ? 1 : 0) << 0;
bootmode |= (gpio_get_value(MX23_PAD_LCD_D01__GPIO_1_1) ? 1 : 0) << 1;
bootmode |= (gpio_get_value(MX23_PAD_LCD_D02__GPIO_1_2) ? 1 : 0) << 2;
bootmode |= (gpio_get_value(MX23_PAD_LCD_D03__GPIO_1_3) ? 1 : 0) << 3;
bootmode |= (gpio_get_value(MX23_PAD_LCD_D05__GPIO_1_5) ? 1 : 0) << 5;
#elif defined(CONFIG_MX28)
/* Setup bootmode pins as GPIO input */
gpio_direction_input(MX28_PAD_LCD_D00__GPIO_1_0);
gpio_direction_input(MX28_PAD_LCD_D01__GPIO_1_1);
@ -83,6 +107,7 @@ static uint8_t mxs_get_bootmode_index(void)
bootmode |= (gpio_get_value(MX28_PAD_LCD_D03__GPIO_1_3) ? 1 : 0) << 3;
bootmode |= (gpio_get_value(MX28_PAD_LCD_D04__GPIO_1_4) ? 1 : 0) << 4;
bootmode |= (gpio_get_value(MX28_PAD_LCD_D05__GPIO_1_5) ? 1 : 0) << 5;
#endif
for (i = 0; i < ARRAY_SIZE(mxs_boot_modes); i++) {
masked = bootmode & mxs_boot_modes[i].boot_mask;