diff options
Diffstat (limited to 'arch/arm/cpu/sa1100/start.S')
| -rw-r--r-- | arch/arm/cpu/sa1100/start.S | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/arch/arm/cpu/sa1100/start.S b/arch/arm/cpu/sa1100/start.S deleted file mode 100644 index 2f84f20575..0000000000 --- a/arch/arm/cpu/sa1100/start.S +++ /dev/null @@ -1,126 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * armboot - Startup Code for SA1100 CPU - * - * Copyright (C) 1998 Dan Malek <dmalek@jlc.net> - * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se> - * Copyright (C) 2000 Wolfgang Denk <wd@denx.de> - * Copyright (c) 2001 Alex Züpke <azu@sysgo.de> - */ - -#include <asm-offsets.h> -#include <config.h> - -/* - ************************************************************************* - * - * Startup Code (reset vector) - * - * do important init only if we don't start from memory! - * relocate armboot to ram - * setup stack - * jump to second stage - * - ************************************************************************* - */ - - .globl reset - -reset: - /* - * set the cpu to SVC32 mode - */ - mrs r0,cpsr - bic r0,r0,#0x1f - orr r0,r0,#0xd3 - msr cpsr,r0 - - /* - * we do sys-critical inits only at reboot, - * not when booting from ram! - */ -#if !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT) - bl cpu_init_crit -#endif - - bl _main - -/*------------------------------------------------------------------------------*/ - - .globl c_runtime_cpu_setup -c_runtime_cpu_setup: - - mov pc, lr - -/* - ************************************************************************* - * - * CPU_init_critical registers - * - * setup important registers - * setup memory timing - * - ************************************************************************* - */ - - -/* Interrupt-Controller base address */ -IC_BASE: .word 0x90050000 -#define ICMR 0x04 - - -/* Reset-Controller */ -RST_BASE: .word 0x90030000 -#define RSRR 0x00 -#define RCSR 0x04 - - -/* PWR */ -PWR_BASE: .word 0x90020000 -#define PSPR 0x08 -#define PPCR 0x14 -cpuspeed: .word CONFIG_SYS_CPUSPEED - - -cpu_init_crit: - /* - * mask all IRQs - */ - ldr r0, IC_BASE - mov r1, #0x00 - str r1, [r0, #ICMR] - - /* set clock speed */ - ldr r0, PWR_BASE - ldr r1, cpuspeed - str r1, [r0, #PPCR] - -#if !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT_ONLY) - /* - * before relocating, we have to setup RAM timing - * because memory timing is board-dependend, you will - * find a lowlevel_init.S in your board directory. - */ - mov ip, lr - bl lowlevel_init - mov lr, ip -#endif - - /* - * disable MMU stuff and enable I-cache - */ - mrc p15,0,r0,c1,c0 - bic r0, r0, #0x00002000 @ clear bit 13 (X) - bic r0, r0, #0x0000000f @ clear bits 3-0 (WCAM) - orr r0, r0, #0x00001000 @ set bit 12 (I) Icache - orr r0, r0, #0x00000002 @ set bit 1 (A) Align - mcr p15,0,r0,c1,c0 - - /* - * flush v4 I/D caches - */ - mov r0, #0 - mcr p15, 0, r0, c7, c7, 0 /* flush v3/v4 cache */ - mcr p15, 0, r0, c8, c7, 0 /* flush v4 TLB */ - - mov pc, lr |