upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
459 lines
10 KiB
459 lines
10 KiB
/* Copyright (C) 2011
|
|
* Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
|
|
* - Added prep subcommand support
|
|
* - Reorganized source - modeled after powerpc version
|
|
*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Marius Groeger <mgroeger@sysgo.de>
|
|
*
|
|
* Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <dm.h>
|
|
#include <dm/root.h>
|
|
#include <image.h>
|
|
#include <u-boot/zlib.h>
|
|
#include <asm/byteorder.h>
|
|
#include <linux/libfdt.h>
|
|
#include <mapmem.h>
|
|
#include <fdt_support.h>
|
|
#include <asm/bootm.h>
|
|
#include <asm/secure.h>
|
|
#include <linux/compiler.h>
|
|
#include <bootm.h>
|
|
#include <vxworks.h>
|
|
|
|
#ifdef CONFIG_ARMV7_NONSEC
|
|
#include <asm/armv7.h>
|
|
#endif
|
|
#include <asm/setup.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static struct tag *params;
|
|
|
|
static ulong get_sp(void)
|
|
{
|
|
ulong ret;
|
|
|
|
asm("mov %0, sp" : "=r"(ret) : );
|
|
return ret;
|
|
}
|
|
|
|
void arch_lmb_reserve(struct lmb *lmb)
|
|
{
|
|
ulong sp, bank_end;
|
|
int bank;
|
|
|
|
/*
|
|
* Booting a (Linux) kernel image
|
|
*
|
|
* Allocate space for command line and board info - the
|
|
* address should be as high as possible within the reach of
|
|
* the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
|
|
* memory, which means far enough below the current stack
|
|
* pointer.
|
|
*/
|
|
sp = get_sp();
|
|
debug("## Current stack ends at 0x%08lx ", sp);
|
|
|
|
/* adjust sp by 4K to be safe */
|
|
sp -= 4096;
|
|
for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
|
|
if (sp < gd->bd->bi_dram[bank].start)
|
|
continue;
|
|
bank_end = gd->bd->bi_dram[bank].start +
|
|
gd->bd->bi_dram[bank].size;
|
|
if (sp >= bank_end)
|
|
continue;
|
|
lmb_reserve(lmb, sp, bank_end - sp);
|
|
break;
|
|
}
|
|
}
|
|
|
|
__weak void board_quiesce_devices(void)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* 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 setup_start_tag (bd_t *bd)
|
|
{
|
|
params = (struct tag *)bd->bi_boot_params;
|
|
|
|
params->hdr.tag = ATAG_CORE;
|
|
params->hdr.size = tag_size (tag_core);
|
|
|
|
params->u.core.flags = 0;
|
|
params->u.core.pagesize = 0;
|
|
params->u.core.rootdev = 0;
|
|
|
|
params = tag_next (params);
|
|
}
|
|
|
|
static void setup_memory_tags(bd_t *bd)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
|
|
params->hdr.tag = ATAG_MEM;
|
|
params->hdr.size = tag_size (tag_mem32);
|
|
|
|
params->u.mem.start = bd->bi_dram[i].start;
|
|
params->u.mem.size = bd->bi_dram[i].size;
|
|
|
|
params = tag_next (params);
|
|
}
|
|
}
|
|
|
|
static void setup_commandline_tag(bd_t *bd, char *commandline)
|
|
{
|
|
char *p;
|
|
|
|
if (!commandline)
|
|
return;
|
|
|
|
/* eat leading white space */
|
|
for (p = commandline; *p == ' '; p++);
|
|
|
|
/* skip non-existent command lines so the kernel will still
|
|
* use its default command line.
|
|
*/
|
|
if (*p == '\0')
|
|
return;
|
|
|
|
params->hdr.tag = ATAG_CMDLINE;
|
|
params->hdr.size =
|
|
(sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
|
|
|
|
strcpy (params->u.cmdline.cmdline, p);
|
|
|
|
params = tag_next (params);
|
|
}
|
|
|
|
static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
|
|
{
|
|
/* an ATAG_INITRD node tells the kernel where the compressed
|
|
* ramdisk can be found. ATAG_RDIMG is a better name, actually.
|
|
*/
|
|
params->hdr.tag = ATAG_INITRD2;
|
|
params->hdr.size = tag_size (tag_initrd);
|
|
|
|
params->u.initrd.start = initrd_start;
|
|
params->u.initrd.size = initrd_end - initrd_start;
|
|
|
|
params = tag_next (params);
|
|
}
|
|
|
|
static void setup_serial_tag(struct tag **tmp)
|
|
{
|
|
struct tag *params = *tmp;
|
|
struct tag_serialnr serialnr;
|
|
|
|
get_board_serial(&serialnr);
|
|
params->hdr.tag = ATAG_SERIAL;
|
|
params->hdr.size = tag_size (tag_serialnr);
|
|
params->u.serialnr.low = serialnr.low;
|
|
params->u.serialnr.high= serialnr.high;
|
|
params = tag_next (params);
|
|
*tmp = params;
|
|
}
|
|
|
|
static void setup_revision_tag(struct tag **in_params)
|
|
{
|
|
u32 rev = 0;
|
|
|
|
rev = get_board_rev();
|
|
params->hdr.tag = ATAG_REVISION;
|
|
params->hdr.size = tag_size (tag_revision);
|
|
params->u.revision.rev = rev;
|
|
params = tag_next (params);
|
|
}
|
|
|
|
static void setup_end_tag(bd_t *bd)
|
|
{
|
|
params->hdr.tag = ATAG_NONE;
|
|
params->hdr.size = 0;
|
|
}
|
|
|
|
__weak void setup_board_tags(struct tag **in_params) {}
|
|
|
|
#ifdef CONFIG_ARM64
|
|
static void do_nonsec_virt_switch(void)
|
|
{
|
|
smp_kick_all_cpus();
|
|
dcache_disable(); /* flush cache before swtiching to EL2 */
|
|
}
|
|
#endif
|
|
|
|
/* Subcommand: PREP */
|
|
static void boot_prep_linux(bootm_headers_t *images)
|
|
{
|
|
char *commandline = env_get("bootargs");
|
|
|
|
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 if (BOOTM_ENABLE_TAGS) {
|
|
debug("using: ATAGS\n");
|
|
setup_start_tag(gd->bd);
|
|
if (BOOTM_ENABLE_SERIAL_TAG)
|
|
setup_serial_tag(¶ms);
|
|
if (BOOTM_ENABLE_CMDLINE_TAG)
|
|
setup_commandline_tag(gd->bd, commandline);
|
|
if (BOOTM_ENABLE_REVISION_TAG)
|
|
setup_revision_tag(¶ms);
|
|
if (BOOTM_ENABLE_MEMORY_TAGS)
|
|
setup_memory_tags(gd->bd);
|
|
if (BOOTM_ENABLE_INITRD_TAG) {
|
|
/*
|
|
* In boot_ramdisk_high(), it may relocate ramdisk to
|
|
* a specified location. And set images->initrd_start &
|
|
* images->initrd_end to relocated ramdisk's start/end
|
|
* addresses. So use them instead of images->rd_start &
|
|
* images->rd_end when possible.
|
|
*/
|
|
if (images->initrd_start && images->initrd_end) {
|
|
setup_initrd_tag(gd->bd, images->initrd_start,
|
|
images->initrd_end);
|
|
} else if (images->rd_start && images->rd_end) {
|
|
setup_initrd_tag(gd->bd, images->rd_start,
|
|
images->rd_end);
|
|
}
|
|
}
|
|
setup_board_tags(¶ms);
|
|
setup_end_tag(gd->bd);
|
|
} else {
|
|
printf("FDT and ATAGS support not compiled in - hanging\n");
|
|
hang();
|
|
}
|
|
}
|
|
|
|
__weak bool armv7_boot_nonsec_default(void)
|
|
{
|
|
#ifdef CONFIG_ARMV7_BOOT_SEC_DEFAULT
|
|
return false;
|
|
#else
|
|
return true;
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_ARMV7_NONSEC
|
|
bool armv7_boot_nonsec(void)
|
|
{
|
|
char *s = env_get("bootm_boot_mode");
|
|
bool nonsec = armv7_boot_nonsec_default();
|
|
|
|
if (s && !strcmp(s, "sec"))
|
|
nonsec = false;
|
|
|
|
if (s && !strcmp(s, "nonsec"))
|
|
nonsec = true;
|
|
|
|
return nonsec;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_ARM64
|
|
__weak void update_os_arch_secondary_cores(uint8_t os_arch)
|
|
{
|
|
}
|
|
|
|
#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
|
|
static void switch_to_el1(void)
|
|
{
|
|
if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
|
|
(images.os.arch == IH_ARCH_ARM))
|
|
armv8_switch_to_el1(0, (u64)gd->bd->bi_arch_number,
|
|
(u64)images.ft_addr, 0,
|
|
(u64)images.ep,
|
|
ES_TO_AARCH32);
|
|
else
|
|
armv8_switch_to_el1((u64)images.ft_addr, 0, 0, 0,
|
|
images.ep,
|
|
ES_TO_AARCH64);
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
/* Subcommand: GO */
|
|
static void boot_jump_linux(bootm_headers_t *images, int flag)
|
|
{
|
|
#ifdef CONFIG_ARM64
|
|
void (*kernel_entry)(void *fdt_addr, void *res0, void *res1,
|
|
void *res2);
|
|
int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
|
|
|
|
kernel_entry = (void (*)(void *fdt_addr, void *res0, void *res1,
|
|
void *res2))images->ep;
|
|
|
|
debug("## Transferring control to Linux (at address %lx)...\n",
|
|
(ulong) kernel_entry);
|
|
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
|
|
|
|
announce_and_cleanup(fake);
|
|
|
|
if (!fake) {
|
|
#ifdef CONFIG_ARMV8_PSCI
|
|
armv8_setup_psci();
|
|
#endif
|
|
do_nonsec_virt_switch();
|
|
|
|
update_os_arch_secondary_cores(images->os.arch);
|
|
|
|
#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
|
|
armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
|
|
(u64)switch_to_el1, ES_TO_AARCH64);
|
|
#else
|
|
if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
|
|
(images->os.arch == IH_ARCH_ARM))
|
|
armv8_switch_to_el2(0, (u64)gd->bd->bi_arch_number,
|
|
(u64)images->ft_addr, 0,
|
|
(u64)images->ep,
|
|
ES_TO_AARCH32);
|
|
else
|
|
armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
|
|
images->ep,
|
|
ES_TO_AARCH64);
|
|
#endif
|
|
}
|
|
#else
|
|
unsigned long machid = gd->bd->bi_arch_number;
|
|
char *s;
|
|
void (*kernel_entry)(int zero, int arch, uint params);
|
|
unsigned long r2;
|
|
int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
|
|
|
|
kernel_entry = (void (*)(int, int, uint))images->ep;
|
|
#ifdef CONFIG_CPU_V7M
|
|
ulong addr = (ulong)kernel_entry | 1;
|
|
kernel_entry = (void *)addr;
|
|
#endif
|
|
s = env_get("machid");
|
|
if (s) {
|
|
if (strict_strtoul(s, 16, &machid) < 0) {
|
|
debug("strict_strtoul failed!\n");
|
|
return;
|
|
}
|
|
printf("Using machid 0x%lx from environment\n", machid);
|
|
}
|
|
|
|
debug("## Transferring control to Linux (at address %08lx)" \
|
|
"...\n", (ulong) kernel_entry);
|
|
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
|
|
announce_and_cleanup(fake);
|
|
|
|
if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
|
|
r2 = (unsigned long)images->ft_addr;
|
|
else
|
|
r2 = gd->bd->bi_boot_params;
|
|
|
|
if (!fake) {
|
|
#ifdef CONFIG_ARMV7_NONSEC
|
|
if (armv7_boot_nonsec()) {
|
|
armv7_init_nonsec();
|
|
secure_ram_addr(_do_nonsec_entry)(kernel_entry,
|
|
0, machid, r2);
|
|
} else
|
|
#endif
|
|
kernel_entry(0, machid, r2);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* Main Entry point for arm bootm implementation
|
|
*
|
|
* Modeled after the powerpc implementation
|
|
* DIFFERENCE: Instead of calling prep and go at the end
|
|
* they are called if subcommand is equal 0.
|
|
*/
|
|
int do_bootm_linux(int flag, int argc, char * const argv[],
|
|
bootm_headers_t *images)
|
|
{
|
|
/* No need for those on ARM */
|
|
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;
|
|
}
|
|
|
|
#if defined(CONFIG_BOOTM_VXWORKS)
|
|
void boot_prep_vxworks(bootm_headers_t *images)
|
|
{
|
|
#if defined(CONFIG_OF_LIBFDT)
|
|
int off;
|
|
|
|
if (images->ft_addr) {
|
|
off = fdt_path_offset(images->ft_addr, "/memory");
|
|
if (off < 0) {
|
|
if (arch_fixup_fdt(images->ft_addr))
|
|
puts("## WARNING: fixup memory failed!\n");
|
|
}
|
|
}
|
|
#endif
|
|
cleanup_before_linux();
|
|
}
|
|
void boot_jump_vxworks(bootm_headers_t *images)
|
|
{
|
|
#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
|
|
armv8_setup_psci();
|
|
smp_kick_all_cpus();
|
|
#endif
|
|
|
|
/* ARM VxWorks requires device tree physical address to be passed */
|
|
((void (*)(void *))images->ep)(images->ft_addr);
|
|
}
|
|
#endif
|
|
|