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https://github.com/AsahiLinux/u-boot
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27aede24bc
To enter the special mode, one needs to short cut two pads with e.g. screw driver. After power up the SPL will execute u-boot in which proper actions will be taken. It is worth noting that we do not alter envs (even the BOOT_FROM variable) and unconditionally go to recovery. Signed-off-by: Lukasz Majewski <lukma@denx.de>
120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 DENX Software Engineering
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* Lukasz Majewski, DENX Software Engineering, lukma@denx.de
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*/
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#include <asm/mach-imx/iomux-v3.h>
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#include <asm/arch/mx6-pins.h>
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#include "common.h"
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iomux_v3_cfg_t const uart_pads[] = {
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/* UART4 */
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MX6_PAD_CSI0_DAT12__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
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MX6_PAD_CSI0_DAT13__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
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MX6_PAD_CSI0_DAT16__UART4_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
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MX6_PAD_CSI0_DAT17__UART4_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
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};
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iomux_v3_cfg_t const uart_console_pads[] = {
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/* UART5 */
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MX6_PAD_CSI0_DAT14__UART5_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
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MX6_PAD_CSI0_DAT15__UART5_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
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MX6_PAD_CSI0_DAT18__UART5_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
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MX6_PAD_CSI0_DAT19__UART5_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
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};
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void displ5_set_iomux_uart_spl(void)
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{
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SETUP_IOMUX_PADS(uart_console_pads);
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}
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void displ5_set_iomux_uart(void)
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{
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SETUP_IOMUX_PADS(uart_pads);
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}
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iomux_v3_cfg_t const misc_pads_spl[] = {
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/* Emergency recovery pin */
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MX6_PAD_EIM_D29__GPIO3_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
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};
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void displ5_set_iomux_misc_spl(void)
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{
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SETUP_IOMUX_PADS(misc_pads_spl);
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}
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#ifdef CONFIG_MXC_SPI
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iomux_v3_cfg_t const ecspi_pads[] = {
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/* SPI3 */
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MX6_PAD_DISP0_DAT2__ECSPI3_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
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MX6_PAD_DISP0_DAT1__ECSPI3_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
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MX6_PAD_DISP0_DAT0__ECSPI3_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
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MX6_PAD_DISP0_DAT3__ECSPI3_SS0 | MUX_PAD_CTRL(NO_PAD_CTRL),
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MX6_PAD_DISP0_DAT4__ECSPI3_SS1 | MUX_PAD_CTRL(NO_PAD_CTRL),
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MX6_PAD_DISP0_DAT5__ECSPI3_SS2 | MUX_PAD_CTRL(NO_PAD_CTRL),
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MX6_PAD_DISP0_DAT6__ECSPI3_SS3 | MUX_PAD_CTRL(NO_PAD_CTRL),
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MX6_PAD_DISP0_DAT7__ECSPI3_RDY | MUX_PAD_CTRL(NO_PAD_CTRL),
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};
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iomux_v3_cfg_t const ecspi2_pads[] = {
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/* SPI2, NOR Flash nWP, CS0 */
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MX6_PAD_CSI0_DAT10__ECSPI2_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
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MX6_PAD_CSI0_DAT9__ECSPI2_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
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MX6_PAD_CSI0_DAT8__ECSPI2_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
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MX6_PAD_CSI0_DAT11__GPIO5_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
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MX6_PAD_SD3_DAT5__GPIO7_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL),
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};
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int board_spi_cs_gpio(unsigned int bus, unsigned int cs)
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{
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if (bus != 1 || cs != (IMX_GPIO_NR(5, 29) << 8))
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return -EINVAL;
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return IMX_GPIO_NR(5, 29);
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}
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void displ5_set_iomux_ecspi_spl(void)
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{
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SETUP_IOMUX_PADS(ecspi2_pads);
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}
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void displ5_set_iomux_ecspi(void)
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{
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SETUP_IOMUX_PADS(ecspi_pads);
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}
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#else
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void displ5_set_iomux_ecspi_spl(void) {}
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void displ5_set_iomux_ecspi(void) {}
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#endif
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#ifdef CONFIG_FSL_ESDHC
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iomux_v3_cfg_t const usdhc4_pads[] = {
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MX6_PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NANDF_ALE__SD4_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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};
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void displ5_set_iomux_usdhc_spl(void)
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{
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SETUP_IOMUX_PADS(usdhc4_pads);
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}
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void displ5_set_iomux_usdhc(void)
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{
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SETUP_IOMUX_PADS(usdhc4_pads);
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}
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#else
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void displ5_set_iomux_usdhc_spl(void) {}
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void displ5_set_iomux_usdhc(void) {}
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#endif
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