[U-Boot] [PATCH 10/18] mx23: SPL: Add boot mode support
Marek Vasut
marex at denx.de
Fri Jan 11 14:19:10 CET 2013
From: Otavio Salvador <otavio at ossystems.com.br>
This adds the boot mode support for i.MX23 processors.
Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam at freescale.com>
Cc: Marek Vasut <marex at denx.de>
Cc: Stefano Babic <sbabic at denx.de>
---
arch/arm/cpu/arm926ejs/mxs/spl_boot.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_boot.c b/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
index 1b8502e..7e70440 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
@@ -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;
--
1.7.10.4
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