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https://github.com/AsahiLinux/u-boot
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caa7fc2c57
SPL is creating fit-images DT node when loadables are recorded in selected
configuration. Entries which are created are using entry-point and
load-addr property names. But there shouldn't be a need to use non standard
properties because entry/load are standard FIT properties. But using
standard FIT properties enables option to use generic FIT functions to
descrease SPL size. Here is result for ZynqMP virt configuration:
xilinx_zynqmp_virt: spl/u-boot-spl:all -82 spl/u-boot-spl:rodata -22 spl/u-boot-spl:text -60
The patch causes change in run time fit image record.
Before:
fit-images {
uboot {
os = "u-boot";
type = "firmware";
size = <0xfd520>;
entry-point = <0x8000000>;
load-addr = <0x8000000>;
};
};
After:
fit-images {
uboot {
os = "u-boot";
type = "firmware";
size = <0xfd520>;
entry = <0x8000000>;
load = <0x8000000>;
};
};
Replacing calling fdt_getprop_u32() by fit_image_get_entry/load() also
enables support for reading entry/load properties recorded in 64bit format.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019 Fraunhofer AISEC,
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* Lukas Auer <lukas.auer@aisec.fraunhofer.de>
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*
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* Based on common/spl/spl_atf.c
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <errno.h>
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#include <hang.h>
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#include <image.h>
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#include <spl.h>
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#include <asm/smp.h>
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#include <opensbi.h>
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#include <linux/libfdt.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct fw_dynamic_info opensbi_info;
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static int spl_opensbi_find_uboot_node(void *blob, int *uboot_node)
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{
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int fit_images_node, node;
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const char *fit_os;
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fit_images_node = fdt_path_offset(blob, "/fit-images");
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if (fit_images_node < 0)
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return -ENODEV;
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fdt_for_each_subnode(node, blob, fit_images_node) {
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fit_os = fdt_getprop(blob, node, FIT_OS_PROP, NULL);
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if (!fit_os)
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continue;
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if (genimg_get_os_id(fit_os) == IH_OS_U_BOOT) {
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*uboot_node = node;
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return 0;
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}
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}
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return -ENODEV;
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}
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void spl_invoke_opensbi(struct spl_image_info *spl_image)
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{
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int ret, uboot_node;
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ulong uboot_entry;
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void (*opensbi_entry)(ulong hartid, ulong dtb, ulong info);
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if (!spl_image->fdt_addr) {
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pr_err("No device tree specified in SPL image\n");
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hang();
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}
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/* Find U-Boot image in /fit-images */
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ret = spl_opensbi_find_uboot_node(spl_image->fdt_addr, &uboot_node);
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if (ret) {
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pr_err("Can't find U-Boot node, %d\n", ret);
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hang();
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}
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/* Get U-Boot entry point */
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ret = fit_image_get_entry(spl_image->fdt_addr, uboot_node, &uboot_entry);
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if (ret)
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ret = fit_image_get_load(spl_image->fdt_addr, uboot_node, &uboot_entry);
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/* Prepare obensbi_info object */
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opensbi_info.magic = FW_DYNAMIC_INFO_MAGIC_VALUE;
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opensbi_info.version = FW_DYNAMIC_INFO_VERSION;
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opensbi_info.next_addr = uboot_entry;
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opensbi_info.next_mode = FW_DYNAMIC_INFO_NEXT_MODE_S;
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opensbi_info.options = SBI_SCRATCH_NO_BOOT_PRINTS;
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opensbi_info.boot_hart = gd->arch.boot_hart;
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opensbi_entry = (void (*)(ulong, ulong, ulong))spl_image->entry_point;
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invalidate_icache_all();
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#ifdef CONFIG_SPL_SMP
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/*
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* Start OpenSBI on all secondary harts and wait for acknowledgment.
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*
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* OpenSBI first relocates itself to its link address. This is done by
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* the main hart. To make sure no hart is still running U-Boot SPL
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* during relocation, we wait for all secondary harts to acknowledge
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* the call-function request before entering OpenSBI on the main hart.
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* Otherwise, code corruption can occur if the link address ranges of
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* U-Boot SPL and OpenSBI overlap.
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*/
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ret = smp_call_function((ulong)spl_image->entry_point,
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(ulong)spl_image->fdt_addr,
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(ulong)&opensbi_info, 1);
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if (ret)
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hang();
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#endif
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opensbi_entry(gd->arch.boot_hart, (ulong)spl_image->fdt_addr,
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(ulong)&opensbi_info);
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}
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