mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-09-29 10:52:09 +00:00
65cc0e2a65
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
256 lines
6.6 KiB
ArmAsm
256 lines
6.6 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* (C) Copyright 2015 Angelo Dureghello <angelo@sysam.it>
|
|
* Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
|
|
*/
|
|
|
|
#include <asm-offsets.h>
|
|
#include <config.h>
|
|
#include <asm/cache.h>
|
|
|
|
#define _START _start
|
|
#define _FAULT _fault
|
|
|
|
|
|
.macro SAVE_ALL
|
|
move.w #0x2700,%sr; /* disable intrs */
|
|
subl #60,%sp; /* space for 15 regs */
|
|
moveml %d0-%d7/%a0-%a6,%sp@
|
|
.endm
|
|
|
|
.macro RESTORE_ALL
|
|
moveml %sp@,%d0-%d7/%a0-%a6;
|
|
addl #60,%sp; /* space for 15 regs */
|
|
rte
|
|
.endm
|
|
|
|
/* If we come from a pre-loader we don't need an initial exception
|
|
* table.
|
|
*/
|
|
#if !defined(CONFIG_MONITOR_IS_IN_RAM)
|
|
|
|
.text
|
|
|
|
/*
|
|
* Vector table. This is used for initial platform startup.
|
|
* These vectors are to catch any un-intended traps.
|
|
*/
|
|
_vectors:
|
|
/* Flash offset is 0 until we setup CS0 */
|
|
.long 0x00000000
|
|
#if defined(CONFIG_M5307) && \
|
|
(CONFIG_TEXT_BASE == CFG_SYS_INT_FLASH_BASE)
|
|
.long _start - CONFIG_TEXT_BASE
|
|
#else
|
|
.long _START
|
|
#endif
|
|
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
|
|
|
|
#endif
|
|
|
|
.text
|
|
|
|
.globl _start
|
|
_start:
|
|
nop
|
|
nop
|
|
move.w #0x2700,%sr
|
|
|
|
/* set MBAR address + valid flag */
|
|
move.l #(CFG_SYS_MBAR + 1), %d0
|
|
move.c %d0, %MBAR
|
|
|
|
move.l #(CFG_SYS_INIT_RAM_ADDR + 1), %d0
|
|
move.c %d0, %RAMBAR
|
|
|
|
/* DS 4.8.2 (Cache Organization) invalidate and disable cache */
|
|
move.l #CF_CACR_CINVA, %d0
|
|
movec %d0, %CACR
|
|
move.l #0, %d0
|
|
movec %d0, %ACR0
|
|
movec %d0, %ACR1
|
|
|
|
/*
|
|
* if we come from a pre-loader we have no exception table and
|
|
* therefore no VBR to set
|
|
*/
|
|
#if !defined(CONFIG_MONITOR_IS_IN_RAM)
|
|
move.l #CFG_SYS_FLASH_BASE, %d0
|
|
movec %d0, %VBR
|
|
#endif
|
|
|
|
/* initialize general use internal ram */
|
|
move.l #0, %d0
|
|
move.l #(ICACHE_STATUS), %a1 /* icache */
|
|
move.l #(DCACHE_STATUS), %a2 /* dcache */
|
|
move.l %d0, (%a1)
|
|
move.l %d0, (%a2)
|
|
|
|
/* put relocation table address to a5 */
|
|
move.l #__got_start, %a5
|
|
|
|
/* setup stack initially on top of internal static ram */
|
|
move.l #(CFG_SYS_INIT_RAM_ADDR + CFG_SYS_INIT_RAM_SIZE), %sp
|
|
|
|
/*
|
|
* if configured, malloc_f arena will be reserved first,
|
|
* then (and always) gd struct space will be reserved
|
|
*/
|
|
move.l %sp, -(%sp)
|
|
bsr board_init_f_alloc_reserve
|
|
|
|
/* update stack and frame-pointers */
|
|
move.l %d0, %sp
|
|
move.l %sp, %fp
|
|
|
|
/* initialize reserved area */
|
|
move.l %d0, -(%sp)
|
|
bsr board_init_f_init_reserve
|
|
|
|
/* run low-level CPU init code (from flash) */
|
|
bsr cpu_init_f
|
|
|
|
/* run low-level board init code (from flash) */
|
|
clr.l %sp@-
|
|
bsr board_init_f
|
|
|
|
/* board_init_f() does not return */
|
|
|
|
/******************************************************************************/
|
|
|
|
/*
|
|
* void relocate_code(addr_sp, gd, addr_moni)
|
|
*
|
|
* This "function" does not return, instead it continues in RAM
|
|
* after relocating the monitor code.
|
|
*
|
|
*/
|
|
.globl relocate_code
|
|
relocate_code:
|
|
link.w %a6,#0
|
|
move.l 8(%a6), %sp /* set new stack pointer */
|
|
move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
|
|
move.l 16(%a6), %a0 /* Save copy of Destination Address */
|
|
|
|
move.l #CONFIG_SYS_MONITOR_BASE, %a1
|
|
move.l #__init_end, %a2
|
|
move.l %a0, %a3
|
|
/* copy the code to RAM */
|
|
1:
|
|
move.l (%a1)+, (%a3)+
|
|
cmp.l %a1,%a2
|
|
bgt.s 1b
|
|
|
|
/*
|
|
* We are done. Do not return, instead branch to second part of board
|
|
* initialization, now running from RAM.
|
|
*/
|
|
move.l %a0, %a1
|
|
add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
|
|
jmp (%a1)
|
|
|
|
in_ram:
|
|
|
|
clear_bss:
|
|
/*
|
|
* Now clear BSS segment
|
|
*/
|
|
move.l %a0, %a1
|
|
add.l #(_sbss - CONFIG_SYS_MONITOR_BASE), %a1
|
|
move.l %a0, %d1
|
|
add.l #(_ebss - CONFIG_SYS_MONITOR_BASE), %d1
|
|
6:
|
|
clr.l (%a1)+
|
|
cmp.l %a1,%d1
|
|
bgt.s 6b
|
|
|
|
/*
|
|
* fix got table in RAM
|
|
*/
|
|
move.l %a0, %a1
|
|
add.l #(__got_start - CONFIG_SYS_MONITOR_BASE), %a1
|
|
|
|
/* fix got pointer register a5 */
|
|
move.l %a1,%a5
|
|
|
|
move.l %a0, %a2
|
|
add.l #(__got_end - CONFIG_SYS_MONITOR_BASE), %a2
|
|
|
|
7:
|
|
move.l (%a1),%d1
|
|
sub.l #_start, %d1
|
|
add.l %a0,%d1
|
|
move.l %d1,(%a1)+
|
|
cmp.l %a2, %a1
|
|
bne 7b
|
|
|
|
/* calculate relative jump to board_init_r in ram */
|
|
move.l %a0, %a1
|
|
add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
|
|
|
|
/* set parameters for board_init_r */
|
|
move.l %a0,-(%sp) /* dest_addr */
|
|
move.l %d0,-(%sp) /* gd */
|
|
jsr (%a1)
|
|
|
|
/******************************************************************************/
|
|
|
|
/* exception code */
|
|
.globl _fault
|
|
_fault:
|
|
bra _fault
|
|
|
|
.globl _exc_handler
|
|
_exc_handler:
|
|
SAVE_ALL
|
|
movel %sp,%sp@-
|
|
bsr exc_handler
|
|
addql #4,%sp
|
|
RESTORE_ALL
|
|
|
|
.globl _int_handler
|
|
_int_handler:
|
|
SAVE_ALL
|
|
movel %sp,%sp@-
|
|
bsr int_handler
|
|
addql #4,%sp
|
|
RESTORE_ALL
|
|
|
|
/******************************************************************************/
|
|
|
|
.align 4
|