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.
139 lines
3.1 KiB
139 lines
3.1 KiB
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*
|
|
* EFI information obtained here:
|
|
* http://wiki.phoenix.com/wiki/index.php/EFI_BOOT_SERVICES
|
|
*
|
|
* This file implements U-Boot running as an EFI application.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <debug_uart.h>
|
|
#include <errno.h>
|
|
#include <linux/err.h>
|
|
#include <linux/types.h>
|
|
#include <efi.h>
|
|
#include <efi_api.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static struct efi_priv *global_priv;
|
|
|
|
struct efi_system_table *efi_get_sys_table(void)
|
|
{
|
|
return global_priv->sys_table;
|
|
}
|
|
|
|
unsigned long efi_get_ram_base(void)
|
|
{
|
|
return global_priv->ram_base;
|
|
}
|
|
|
|
static efi_status_t setup_memory(struct efi_priv *priv)
|
|
{
|
|
struct efi_boot_services *boot = priv->boot;
|
|
efi_physical_addr_t addr;
|
|
efi_status_t ret;
|
|
int pages;
|
|
|
|
/*
|
|
* Use global_data_ptr instead of gd since it is an assignment. There
|
|
* are very few assignments to global_data in U-Boot and this makes
|
|
* it easier to find them.
|
|
*/
|
|
global_data_ptr = efi_malloc(priv, sizeof(struct global_data), &ret);
|
|
if (!global_data_ptr)
|
|
return ret;
|
|
memset(gd, '\0', sizeof(*gd));
|
|
|
|
gd->malloc_base = (ulong)efi_malloc(priv, CONFIG_VAL(SYS_MALLOC_F_LEN),
|
|
&ret);
|
|
if (!gd->malloc_base)
|
|
return ret;
|
|
pages = CONFIG_EFI_RAM_SIZE >> 12;
|
|
|
|
/*
|
|
* Don't allocate any memory above 4GB. U-Boot is a 32-bit application
|
|
* so we want it to load below 4GB.
|
|
*/
|
|
addr = 1ULL << 32;
|
|
ret = boot->allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
|
|
priv->image_data_type, pages, &addr);
|
|
if (ret) {
|
|
printf("(using pool %lx) ", ret);
|
|
priv->ram_base = (ulong)efi_malloc(priv, CONFIG_EFI_RAM_SIZE,
|
|
&ret);
|
|
if (!priv->ram_base)
|
|
return ret;
|
|
priv->use_pool_for_malloc = true;
|
|
} else {
|
|
priv->ram_base = addr;
|
|
}
|
|
gd->ram_size = pages << 12;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void free_memory(struct efi_priv *priv)
|
|
{
|
|
struct efi_boot_services *boot = priv->boot;
|
|
|
|
if (priv->use_pool_for_malloc)
|
|
efi_free(priv, (void *)priv->ram_base);
|
|
else
|
|
boot->free_pages(priv->ram_base, gd->ram_size >> 12);
|
|
|
|
efi_free(priv, (void *)gd->malloc_base);
|
|
efi_free(priv, gd);
|
|
global_data_ptr = NULL;
|
|
}
|
|
|
|
/**
|
|
* efi_main() - Start an EFI image
|
|
*
|
|
* This function is called by our EFI start-up code. It handles running
|
|
* U-Boot. If it returns, EFI will continue. Another way to get back to EFI
|
|
* is via reset_cpu().
|
|
*/
|
|
efi_status_t efi_main(efi_handle_t image, struct efi_system_table *sys_table)
|
|
{
|
|
struct efi_priv local_priv, *priv = &local_priv;
|
|
efi_status_t ret;
|
|
|
|
/* Set up access to EFI data structures */
|
|
efi_init(priv, "App", image, sys_table);
|
|
|
|
global_priv = priv;
|
|
|
|
/*
|
|
* Set up the EFI debug UART so that printf() works. This is
|
|
* implemented in the EFI serial driver, serial_efi.c. The application
|
|
* can use printf() freely.
|
|
*/
|
|
debug_uart_init();
|
|
|
|
ret = setup_memory(priv);
|
|
if (ret) {
|
|
printf("Failed to set up memory: ret=%lx\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
printf("starting\n");
|
|
|
|
board_init_f(GD_FLG_SKIP_RELOC);
|
|
board_init_r(NULL, 0);
|
|
free_memory(priv);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
void reset_cpu(ulong addr)
|
|
{
|
|
struct efi_priv *priv = global_priv;
|
|
|
|
free_memory(priv);
|
|
printf("U-Boot EFI exiting\n");
|
|
priv->boot->exit(priv->parent_image, EFI_SUCCESS, 0, NULL);
|
|
}
|
|
|