mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-26 04:53:42 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
/*
|
|
* Copyright (C) 2012 Stefan Roese <sr@denx.de>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <spl.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/*
|
|
* Needed to align size SPL image to a 4-byte length
|
|
*/
|
|
u32 end_align __attribute__ ((section(".end_align")));
|
|
|
|
/*
|
|
* Return selected boot device. On MPC5200 its only NOR flash right now.
|
|
*/
|
|
u32 spl_boot_device(void)
|
|
{
|
|
return BOOT_DEVICE_NOR;
|
|
}
|
|
|
|
/*
|
|
* SPL version of board_init_f()
|
|
*/
|
|
void board_init_f(ulong bootflag)
|
|
{
|
|
end_align = (u32)__spl_flash_end;
|
|
|
|
/*
|
|
* On MPC5200, the initial RAM (and gd) is located in the internal
|
|
* SRAM. So we can actually call the preloader console init code
|
|
* before calling initdram(). This makes serial output (printf)
|
|
* available very early, even before SDRAM init, which has been
|
|
* an U-Boot priciple from day 1.
|
|
*/
|
|
|
|
/*
|
|
* Init global_data pointer. Has to be done before calling
|
|
* get_clocks(), as it stores some clock values into gd needed
|
|
* later on in the serial driver.
|
|
*/
|
|
/* Pointer is writable since we allocated a register for it */
|
|
gd = (gd_t *)(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
|
|
/* Clear initial global data */
|
|
memset((void *)gd, 0, sizeof(gd_t));
|
|
|
|
/*
|
|
* get_clocks() needs to be called so that the serial driver
|
|
* works correctly
|
|
*/
|
|
get_clocks();
|
|
|
|
/*
|
|
* Do rudimental console / serial setup
|
|
*/
|
|
preloader_console_init();
|
|
|
|
/*
|
|
* First we need to initialize the SDRAM, so that the real
|
|
* U-Boot or the OS (Linux) can be loaded
|
|
*/
|
|
initdram(0);
|
|
|
|
/* Clear bss */
|
|
memset(__bss_start, '\0', __bss_end - __bss_start);
|
|
|
|
/*
|
|
* Call board_init_r() (SPL framework version) to load and boot
|
|
* real U-Boot or OS
|
|
*/
|
|
board_init_r(NULL, 0);
|
|
/* Does not return!!! */
|
|
}
|