mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-23 03:19:43 +09:00
d58fc12eb7
SPL needs to have bigger stack size because of USB. Simple malloc needs to be disabled because dfu code requires different allocation functions. There is no space in OCM that's why random place in DDR is used. BOOTD must be disabled because it is causing compilation error. All variables are disabled and used only variables valid for DFU because they are simple huge. Including automatic variables added by CONFIG_ENV_VARS_UBOOT_CONFIG. Hardcode addresses for u-boot, atf, kernel and dtb just for SPL DFU code. Enable SPL DFU for zcu100. Create new usb_dfu_spl variable just to run Linux kernel loaded in SPL. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
119 lines
2.1 KiB
C
119 lines
2.1 KiB
C
/*
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* Copyright 2015 - 2016 Xilinx, Inc.
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*
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* Michal Simek <michal.simek@xilinx.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <debug_uart.h>
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#include <spl.h>
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#include <asm/io.h>
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#include <asm/spl.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/sys_proto.h>
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void board_init_f(ulong dummy)
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{
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psu_init();
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board_early_init_r();
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#ifdef CONFIG_DEBUG_UART
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/* Uart debug for sure */
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debug_uart_init();
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puts("Debug uart enabled\n"); /* or printch() */
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#endif
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/* Delay is required for clocks to be propagated */
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udelay(1000000);
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/* Clear the BSS */
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memset(__bss_start, 0, __bss_end - __bss_start);
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/* No need to call timer init - it is empty for ZynqMP */
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board_init_r(NULL, 0);
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}
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#ifdef CONFIG_SPL_BOARD_INIT
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void spl_board_init(void)
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{
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preloader_console_init();
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board_init();
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}
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#endif
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u32 spl_boot_device(void)
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{
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u32 reg = 0;
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u8 bootmode;
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#if defined(CONFIG_SPL_ZYNQMP_ALT_BOOTMODE_ENABLED)
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/* Change default boot mode at run-time */
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writel(BOOT_MODE_USE_ALT |
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CONFIG_SPL_ZYNQMP_ALT_BOOTMODE << BOOT_MODE_ALT_SHIFT,
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&crlapb_base->boot_mode);
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#endif
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reg = readl(&crlapb_base->boot_mode);
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bootmode = reg & BOOT_MODES_MASK;
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switch (bootmode) {
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case JTAG_MODE:
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return BOOT_DEVICE_RAM;
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#ifdef CONFIG_SPL_MMC_SUPPORT
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case EMMC_MODE:
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case SD_MODE:
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case SD_MODE1:
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return BOOT_DEVICE_MMC1;
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#endif
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#ifdef CONFIG_SPL_DFU_SUPPORT
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case USB_MODE:
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return BOOT_DEVICE_DFU;
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#endif
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default:
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printf("Invalid Boot Mode:0x%x\n", bootmode);
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break;
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}
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return 0;
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}
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u32 spl_boot_mode(const u32 boot_device)
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{
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switch (spl_boot_device()) {
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case BOOT_DEVICE_RAM:
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return 0;
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case BOOT_DEVICE_MMC1:
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return MMCSD_MODE_FS;
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default:
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puts("spl: error: unsupported device\n");
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hang();
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}
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}
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__weak void psu_init(void)
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{
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/*
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* This function is overridden by the one in
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* board/xilinx/zynqmp/(platform)/psu_init_gpl.c, if it exists.
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*/
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}
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#ifdef CONFIG_SPL_OS_BOOT
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int spl_start_uboot(void)
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{
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return 0;
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}
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#endif
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#ifdef CONFIG_SPL_LOAD_FIT
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int board_fit_config_name_match(const char *name)
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{
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/* Just empty function now - can't decide what to choose */
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debug("%s: %s\n", __func__, name);
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return 0;
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}
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#endif
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