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- /*
- * armboot - Startup Code for ARM720 CPU-core
- *
- * Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
- * Copyright (c) 2002 Alex Züpke <azu@sysgo.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
- #include <asm-offsets.h>
- #include <config.h>
- #include <version.h>
- #include <asm/hardware.h>
- /*
- *************************************************************************
- *
- * Startup Code (reset vector)
- *
- * do important init only if we don't start from RAM!
- * 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!
- */
- #ifndef CONFIG_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
- *
- *************************************************************************
- */
- #ifndef CONFIG_SKIP_LOWLEVEL_INIT
- cpu_init_crit:
- mov ip, lr
- /*
- * before relocating, we have to setup RAM timing
- * because memory timing is board-dependent, you will
- * find a lowlevel_init.S in your board directory.
- */
- bl lowlevel_init
- mov lr, ip
- mov pc, lr
- #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
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