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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011 Andes Technology Corporation
* Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
* Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
* Rick Chen, Andes Technology Corporation <rick@andestech.com>
*/
#include <common.h>
#include <command.h>
#include <dm.h>
#include <dm/root.h>
#include <image.h>
#include <asm/byteorder.h>
#include <asm/csr.h>
#include <dm/device.h>
#include <dm/root.h>
#include <u-boot/zlib.h>
DECLARE_GLOBAL_DATA_PTR;
__weak void board_quiesce_devices(void)
{
}
int arch_fixup_fdt(void *blob)
{
return 0;
}
/**
* announce_and_cleanup() - Print message and prepare for kernel boot
*
* @fake: non-zero to do everything except actually boot
*/
static void announce_and_cleanup(int fake)
{
printf("\nStarting kernel ...%s\n\n", fake ?
"(fake run for tracing)" : "");
bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
#ifdef CONFIG_BOOTSTAGE_FDT
bootstage_fdt_add_report();
#endif
#ifdef CONFIG_BOOTSTAGE_REPORT
bootstage_report();
#endif
#ifdef CONFIG_USB_DEVICE
udc_disconnect();
#endif
board_quiesce_devices();
/*
* Call remove function of all devices with a removal flag set.
* This may be useful for last-stage operations, like cancelling
* of DMA operation or releasing device internal buffers.
*/
dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
cleanup_before_linux();
}
static void boot_prep_linux(bootm_headers_t *images)
{
if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
#ifdef CONFIG_OF_LIBFDT
debug("using: FDT\n");
if (image_setup_linux(images)) {
printf("FDT creation failed! hanging...");
hang();
}
#endif
} else {
printf("Device tree not found or missing FDT support\n");
hang();
}
}
static void boot_jump_linux(bootm_headers_t *images, int flag)
{
void (*kernel)(ulong hart, void *dtb);
int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
kernel = (void (*)(ulong, void *))images->ep;
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
debug("## Transferring control to Linux (at address %08lx) ...\n",
(ulong)kernel);
announce_and_cleanup(fake);
if (!fake) {
if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
kernel(csr_read(mhartid), images->ft_addr);
}
}
int do_bootm_linux(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
/* No need for those on RISC-V */
if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
return -1;
if (flag & BOOTM_STATE_OS_PREP) {
boot_prep_linux(images);
return 0;
}
if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
boot_jump_linux(images, flag);
return 0;
}
boot_prep_linux(images);
boot_jump_linux(images, flag);
return 0;
}
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