forked from OERV-BSP/u-boot
ff0540fcfe
Add support for the Toradex SMARC iMX95. Link: https://www.toradex.com/computer-on-modules/smarc-arm-family/nxp-imx95 Link: https://www.toradex.com/products/carrier-board/smarc-development-board-kit Signed-off-by: João Paulo Gonçalves <joao.goncalves@toradex.com> Co-developed-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com> Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com> Co-developed-by: Max Krummenacher <max.krummenacher@toradex.com> Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com> Co-developed-by: Ernest Van Hoecke <ernest.vanhoecke@toradex.com> Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@toradex.com>
120 lines
2.4 KiB
C
120 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* Copyright (C) 2025 Toradex */
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#include <asm/arch/clock.h>
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#include <asm/arch/mu.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/mach-imx/boot_mode.h>
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#include <asm/mach-imx/ele_api.h>
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#include <asm/sections.h>
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#include <asm/global_data.h>
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#include <clk.h>
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#include <dm/ofnode.h>
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#include <dm/uclass.h>
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#include <hang.h>
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#include <i2c.h>
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#include <init.h>
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#include <spl.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define EC_I2C_BUS_NODE_PATH "/soc/bus@42000000/i2c@42540000"
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int spl_board_boot_device(enum boot_device boot_dev_spl)
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{
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switch (boot_dev_spl) {
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case SD1_BOOT:
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case MMC1_BOOT:
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return BOOT_DEVICE_MMC1;
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case SD2_BOOT:
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case MMC2_BOOT:
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return BOOT_DEVICE_MMC2;
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case USB_BOOT:
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return BOOT_DEVICE_BOARD;
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default:
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return BOOT_DEVICE_NONE;
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}
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}
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static void ec_boot_notify(void)
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{
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struct udevice *bus;
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struct udevice *i2c_dev;
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ofnode node;
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int ret;
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u8 val = 0x03;
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node = ofnode_path(EC_I2C_BUS_NODE_PATH);
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if (!ofnode_valid(node)) {
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puts("Failed to find Toradex EC I2C BUS node\n");
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return;
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}
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ret = uclass_get_device_by_ofnode(UCLASS_I2C, node, &bus);
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if (ret) {
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puts("Failed to get Toradex EC I2C BUS\n");
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return;
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}
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ret = dm_i2c_probe(bus, 0x28, 0, &i2c_dev);
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if (ret) {
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puts("Toradex EC not found\n");
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return;
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}
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/* USB configuration before this command (when SoC starts in recovery):
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* - SoC USB1 -> Smarc USB0
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* - SoC USB2 -> NC
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* After the command:
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* - SoC USB1 -> SoM hub -> Smarc USB1, USB2, USB3 and USB4
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* - SoC USB2 -> Smarc USB0
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*/
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ret = dm_i2c_write(i2c_dev, 0xD0, &val, 1);
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if (ret)
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puts("Cannot send command to Toradex EC\n");
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}
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void spl_board_init(void)
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{
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int ret;
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ret = ele_start_rng();
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if (ret)
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printf("Fail to start RNG: %d\n", ret);
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}
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void board_init_f(ulong dummy)
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{
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int ret;
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/* Clear the BSS. */
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memset(__bss_start, 0, __bss_end - __bss_start);
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if (IS_ENABLED(CONFIG_SPL_RECOVER_DATA_SECTION))
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spl_save_restore_data();
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timer_init();
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/* Need dm_init() to run before any SCMI calls */
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spl_early_init();
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/* Need to enable SCMI drivers and ELE driver before console */
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ret = imx9_probe_mu();
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if (ret)
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hang(); /* MU not probed, nothing can be outputed, hang */
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arch_cpu_init();
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board_early_init_f();
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preloader_console_init();
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debug("SOC: 0x%x\n", gd->arch.soc_rev);
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debug("LC: 0x%x\n", gd->arch.lifecycle);
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ec_boot_notify();
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get_reset_reason(true, false);
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board_init_r(NULL, 0);
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}
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