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mx23: SPL: Add boot mode support
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>
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1 changed files with 25 additions and 0 deletions
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@ -51,12 +51,21 @@ void early_delay(int delay)
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#define MUX_CONFIG_BOOTMODE_PAD (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL)
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static const iomux_cfg_t iomux_boot[] = {
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#if defined(CONFIG_MX23)
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MX23_PAD_LCD_D00__GPIO_1_0 | MUX_CONFIG_BOOTMODE_PAD,
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MX23_PAD_LCD_D01__GPIO_1_1 | MUX_CONFIG_BOOTMODE_PAD,
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MX23_PAD_LCD_D02__GPIO_1_2 | MUX_CONFIG_BOOTMODE_PAD,
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MX23_PAD_LCD_D03__GPIO_1_3 | MUX_CONFIG_BOOTMODE_PAD,
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MX23_PAD_LCD_D04__GPIO_1_4 | MUX_CONFIG_BOOTMODE_PAD,
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MX23_PAD_LCD_D05__GPIO_1_5 | MUX_CONFIG_BOOTMODE_PAD,
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#elif defined(CONFIG_MX28)
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MX28_PAD_LCD_D00__GPIO_1_0 | MUX_CONFIG_BOOTMODE_PAD,
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MX28_PAD_LCD_D01__GPIO_1_1 | MUX_CONFIG_BOOTMODE_PAD,
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MX28_PAD_LCD_D02__GPIO_1_2 | MUX_CONFIG_BOOTMODE_PAD,
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MX28_PAD_LCD_D03__GPIO_1_3 | MUX_CONFIG_BOOTMODE_PAD,
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MX28_PAD_LCD_D04__GPIO_1_4 | MUX_CONFIG_BOOTMODE_PAD,
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MX28_PAD_LCD_D05__GPIO_1_5 | MUX_CONFIG_BOOTMODE_PAD,
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#endif
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};
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static uint8_t mxs_get_bootmode_index(void)
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@ -68,6 +77,21 @@ static uint8_t mxs_get_bootmode_index(void)
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/* Setup IOMUX of bootmode pads to GPIO */
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mxs_iomux_setup_multiple_pads(iomux_boot, ARRAY_SIZE(iomux_boot));
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#if defined(CONFIG_MX23)
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/* Setup bootmode pins as GPIO input */
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gpio_direction_input(MX23_PAD_LCD_D00__GPIO_1_0);
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gpio_direction_input(MX23_PAD_LCD_D01__GPIO_1_1);
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gpio_direction_input(MX23_PAD_LCD_D02__GPIO_1_2);
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gpio_direction_input(MX23_PAD_LCD_D03__GPIO_1_3);
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gpio_direction_input(MX23_PAD_LCD_D05__GPIO_1_5);
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/* Read bootmode pads */
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bootmode |= (gpio_get_value(MX23_PAD_LCD_D00__GPIO_1_0) ? 1 : 0) << 0;
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bootmode |= (gpio_get_value(MX23_PAD_LCD_D01__GPIO_1_1) ? 1 : 0) << 1;
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bootmode |= (gpio_get_value(MX23_PAD_LCD_D02__GPIO_1_2) ? 1 : 0) << 2;
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bootmode |= (gpio_get_value(MX23_PAD_LCD_D03__GPIO_1_3) ? 1 : 0) << 3;
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bootmode |= (gpio_get_value(MX23_PAD_LCD_D05__GPIO_1_5) ? 1 : 0) << 5;
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#elif defined(CONFIG_MX28)
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/* Setup bootmode pins as GPIO input */
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gpio_direction_input(MX28_PAD_LCD_D00__GPIO_1_0);
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gpio_direction_input(MX28_PAD_LCD_D01__GPIO_1_1);
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@ -83,6 +107,7 @@ static uint8_t mxs_get_bootmode_index(void)
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bootmode |= (gpio_get_value(MX28_PAD_LCD_D03__GPIO_1_3) ? 1 : 0) << 3;
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bootmode |= (gpio_get_value(MX28_PAD_LCD_D04__GPIO_1_4) ? 1 : 0) << 4;
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bootmode |= (gpio_get_value(MX28_PAD_LCD_D05__GPIO_1_5) ? 1 : 0) << 5;
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#endif
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for (i = 0; i < ARRAY_SIZE(mxs_boot_modes); i++) {
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masked = bootmode & mxs_boot_modes[i].boot_mask;
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