mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-27 05:13:44 +09:00
bd1cc6ae6f
Since the SD3.0 kernel driver needs M4 image support, this causes problem for usb boot booting into kernel. To decouple the relationship, we modify the FDT file in u-boot to disable SD3.0. So the kernel won't depend on M4 image. Signed-off-by: Peng Fan <peng.fan@nxp.com>
95 lines
1.8 KiB
C
95 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <fdt_support.h>
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#include <asm/io.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/mx7ulp-pins.h>
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#include <asm/arch/iomux.h>
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#include <asm/mach-imx/boot_mode.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define UART_PAD_CTRL (PAD_CTL_PUS_UP)
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int dram_init(void)
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{
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gd->ram_size = PHYS_SDRAM_SIZE;
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return 0;
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}
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static iomux_cfg_t const lpuart4_pads[] = {
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MX7ULP_PAD_PTC3__LPUART4_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
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MX7ULP_PAD_PTC2__LPUART4_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
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};
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static void setup_iomux_uart(void)
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{
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mx7ulp_iomux_setup_multiple_pads(lpuart4_pads,
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ARRAY_SIZE(lpuart4_pads));
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}
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int board_early_init_f(void)
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{
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setup_iomux_uart();
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return 0;
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}
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int board_init(void)
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{
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/* address of boot parameters */
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gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
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return 0;
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}
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#if IS_ENABLED(CONFIG_OF_BOARD_SETUP)
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int ft_board_setup(void *blob, bd_t *bd)
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{
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const char *path;
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int rc, nodeoff;
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if (get_boot_device() == USB_BOOT) {
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path = fdt_get_alias(blob, "mmc0");
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if (!path) {
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puts("Not found mmc0\n");
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return 0;
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}
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nodeoff = fdt_path_offset(blob, path);
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if (nodeoff < 0)
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return 0;
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printf("Found usdhc0 node\n");
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if (fdt_get_property(blob, nodeoff, "vqmmc-supply",
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NULL) != NULL) {
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rc = fdt_delprop(blob, nodeoff, "vqmmc-supply");
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if (!rc) {
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puts("Removed vqmmc-supply property\n");
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add:
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rc = fdt_setprop(blob, nodeoff,
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"no-1-8-v", NULL, 0);
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if (rc == -FDT_ERR_NOSPACE) {
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rc = fdt_increase_size(blob, 32);
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if (!rc)
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goto add;
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} else if (rc) {
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printf("Failed to add no-1-8-v property, %d\n", rc);
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} else {
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puts("Added no-1-8-v property\n");
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}
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} else {
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printf("Failed to remove vqmmc-supply property, %d\n", rc);
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}
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}
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}
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return 0;
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}
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#endif
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