mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-09-30 11:22:09 +00:00
28 lines
666 B
ArmAsm
28 lines
666 B
ArmAsm
|
/* SPDX-License-Identifier: GPL-2.0+ */
|
||
|
|
|
||
|
|
#include <config.h>
|
||
|
|
#include <linux/linkage.h>
|
||
|
|
|
||
|
|
ENTRY(arch_very_early_init)
|
||
|
|
#ifdef CONFIG_ARMADA_38X
|
||
|
|
/*
|
||
|
|
* Only with disabled MMU its possible to switch the base
|
||
|
|
* register address on Armada 38x. Without this the SDRAM
|
||
|
|
* located at >= 0x4000.0000 is also not accessible, as its
|
||
|
|
* still locked to cache.
|
||
|
|
*/
|
||
|
|
mrc p15, 0, r0, c1, c0, 0
|
||
|
|
bic r0, #1
|
||
|
|
mcr p15, 0, r0, c1, c0, 0
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Move internal registers from INTREG_BASE_ADDR_REG to SOC_REGS_PHY_BASE */
|
||
|
|
ldr r0, =SOC_REGS_PHY_BASE
|
||
|
|
ldr r1, =INTREG_BASE_ADDR_REG
|
||
|
|
str r0, [r1]
|
||
|
|
add r0, r0, #0xC000
|
||
|
|
mcr p15, 4, r0, c15, c0
|
||
|
|
|
||
|
|
bx lr
|
||
|
|
ENDPROC(arch_very_early_init)
|