1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (C) 2019 Stephan Gerhold <stephan@gerhold.net>
4  */
5 
6 #include <common.h>
7 #include <init.h>
8 #include <asm/io.h>
9 
10 #define U8500_BOOTROM_BASE	0x90000000
11 #define U8500_ASIC_ID_LOC_V2	(U8500_BOOTROM_BASE + 0x1DBF4)
12 
print_cpuinfo(void)13 int print_cpuinfo(void)
14 {
15 	/* Convert ASIC ID to display string, e.g. 0x8520A0 => DB8520 V1.0 */
16 	u32 asicid = readl(U8500_ASIC_ID_LOC_V2);
17 	u32 cpu = (asicid >> 8) & 0xffff;
18 	u32 rev = asicid & 0xff;
19 
20 	/* 0xA0 => 0x10 (V1.0) */
21 	if (rev >= 0xa0)
22 		rev -= 0x90;
23 
24 	printf("CPU: ST-Ericsson DB%x V%d.%d\n", cpu, rev >> 4, rev & 0xf);
25 	return 0;
26 }
27