mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-22 03:03:05 +00:00
84335544ea
Add basic support for the Nuvoton NPCM750 EVB (Poleg). Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
71 lines
2.1 KiB
ArmAsm
71 lines
2.1 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (c) 2021 Nuvoton Technology Corp.
|
|
*/
|
|
|
|
.align 5
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
#ifndef CONFIG_SYS_L2CACHE_OFF
|
|
|
|
ENTRY(l2_pl310_init)
|
|
|
|
@------------------------------------------------------------------
|
|
@ L2CC (PL310) Initialization
|
|
@------------------------------------------------------------------
|
|
@ In this example PL310 PA = VA. The memory was marked as Device memory
|
|
@ in previous stages when defining CORE0 private address space
|
|
LDR r0, =0xF03FC000 @ A9_BASE_ADDR
|
|
|
|
@ Disable L2 Cache controller just in case it is already on
|
|
LDR r1, =0x0
|
|
STR r1, [r0,#0x100]
|
|
|
|
@ Set aux cntrl
|
|
@ Way size = 32KB
|
|
@ Way = 16
|
|
LDR r1, =0x02050000
|
|
ORR r1, r1, #(1 << 29) @ Instruction prefetch enable
|
|
ORR r1, r1, #(1 << 28) @ Data prefetch enable
|
|
ORR r1, r1, #(1 << 22) @ cache replacement policy
|
|
STR r1, [r0,#0x104] @ auxilary control reg at offset 0x104
|
|
|
|
@ Set tag RAM latency
|
|
@ 1 cycle RAM write access latency
|
|
@ 1 cycle RAM read access latency
|
|
@ 1 cycle RAM setup latency
|
|
LDR r1, =0x00000000
|
|
STR r1, [r0,#0x108] @ tag ram control reg at offset 0x108
|
|
|
|
@ Set Data RAM latency
|
|
@ 1 cycle RAM write access latency
|
|
@ 2 cycles RAM read access latency
|
|
@ 1 cycle RAM setup latency
|
|
LDR r1, =0x00000000
|
|
STR r1, [r0,#0x10C] @ data ram control reg at offset 0x108
|
|
|
|
@Cache maintenance - invalidate 16 ways (0xffff) - base offset 0x77C
|
|
LDR r1, =0xFFFF
|
|
STR r1, [r0,#0x77C] @ invalidate by way register at offset 0x77C
|
|
poll_invalidate:
|
|
LDR r1, [r0,#0x77C] @ invalidate by way register at offset 0x77C
|
|
TST r1, #1
|
|
BNE poll_invalidate
|
|
|
|
@ Ensure L2 remains disabled for the time being
|
|
LDR r1, =0x0
|
|
STR r1, [r0,#0x100]
|
|
|
|
MRC p15, 4, r0, c15, c0, 0 @ Read periph base address
|
|
@ SCU offset from base of private peripheral space = 0x000
|
|
|
|
LDR r1, [r0, #0x0] @ Read the SCU Control Register
|
|
ORR r1, r1, #0x1 @ Set bit 0 (The Enable bit)
|
|
STR r1, [r0, #0x0] @ Write back modifed value
|
|
|
|
BX lr
|
|
|
|
ENDPROC(l2_pl310_init)
|
|
|
|
#endif
|