u-boot/arch/microblaze/cpu/spl.c
Ovidiu Panait fc7220f0c4 microblaze: branch to base vector address on reset
Current code assumes that the vector base address is always at 0x0.
However, this value is configurable for MicroBlaze using the
CONFIG_XILINX_MICROBLAZE0_VECTOR_BASE_ADDR Kconfig option. Update the
reset routines to branch to this location instead.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Link: https://lore.kernel.org/r/20211130163358.2531677-10-ovidiu.panait@windriver.com
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2022-01-05 10:22:03 +01:00

63 lines
1.3 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2013 - 2014 Xilinx, Inc
*
* Michal Simek <michal.simek@xilinx.com>
*/
#include <common.h>
#include <command.h>
#include <image.h>
#include <log.h>
#include <spl.h>
#include <asm/io.h>
#include <asm/u-boot.h>
#include <linux/stringify.h>
bool boot_linux;
void board_boot_order(u32 *spl_boot_list)
{
spl_boot_list[0] = BOOT_DEVICE_NOR;
spl_boot_list[1] = BOOT_DEVICE_RAM;
spl_boot_list[2] = BOOT_DEVICE_SPI;
}
/* Board initialization after bss clearance */
void spl_board_init(void)
{
/* enable console uart printing */
preloader_console_init();
}
#ifdef CONFIG_SPL_OS_BOOT
void __noreturn jump_to_image_linux(struct spl_image_info *spl_image)
{
debug("Entering kernel arg pointer: 0x%p\n", spl_image->arg);
typedef void (*image_entry_arg_t)(char *, ulong, ulong)
__attribute__ ((noreturn));
image_entry_arg_t image_entry =
(image_entry_arg_t)spl_image->entry_point;
image_entry(NULL, 0, (ulong)spl_image->arg);
}
#endif /* CONFIG_SPL_OS_BOOT */
int spl_start_uboot(void)
{
#ifdef CONFIG_SPL_OS_BOOT
if (boot_linux)
return 0;
#endif
return 1;
}
int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
__asm__ __volatile__ (
"mts rmsr, r0;" \
"brai " __stringify(CONFIG_XILINX_MICROBLAZE0_VECTOR_BASE_ADDR));
return 0;
}