【ARM】Tiny4412裸板编程之Chip ID

00. 目录

01. Chip ID概述

The Exynos 4412 SCP includes a Chip ID block for the Software (SW) that sends and receives Advanced
Peripheral Bus (APB) interface signals to the bus system.

Exynos 4412 SCP包含一个用于发送和接收高级外设总线接口信号到总线系统的Chip ID模块，

02. 寄存器介绍

PRO_ID介绍

PACKAGE_ID介绍

03. 程序示例

test.s汇编程序

    .section .rodata
    .align 2
.LC0:
    .string "PRO_ID = %p\n"
.LC1:
    .string "PACKAGE_ID = %p\n"


    .section .text
    .align 2
    .global _start
_start:
    stmfd sp!, {lr}

    @PRO_ID
    ldr r0, =.LC0 
    ldr r1, =0x10000000
    ldr r1, [r1]
    mov lr, pc
    ldr pc, =0x43e11a2c


    @PACKAGE_ID
    ldr r0, =.LC1 
    ldr r1, =0x10000004
    ldr r1, [r1]
    mov lr, pc
    ldr pc, =0x43e11a2c

    ldmfd sp!, {pc}

04. 编译执行

Makefile

all:
	arm-linux-gcc -c test.s -o test.o
	arm-linux-ld -Ttext=0x40008000 test.o -o test
	arm-linux-objcopy -O binary test test.bin


.PHONY:clean
clean:
	rm -rf test.o test test.bin

执行结果

DengJin # go 40008000
## Starting application at 0x40008000 ...
PRO_ID = e4412011
PACKAGE_ID = 0b073008
## Application terminated, rc = 0x16
DengJin # 

05. 附录

Exynos 4412 SCP_Users Manual_Ver.0.10.00_Preliminary.pdf

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