1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
4  *
5  * Copyright (C) 2013,2014 Renesas Electronics Corporation
6  */
7 #include <common.h>
8 #include <asm/io.h>
9 
10 #define PRR_MASK		0x7fff
11 #define R8A7796_REV_1_0		0x5200
12 #define R8A7796_REV_1_1		0x5210
13 
rmobile_get_prr(void)14 static u32 rmobile_get_prr(void)
15 {
16 #ifdef CONFIG_RCAR_GEN3
17 	return readl(0xFFF00044);
18 #else
19 	return readl(0xFF000044);
20 #endif
21 }
22 
rmobile_get_cpu_type(void)23 u32 rmobile_get_cpu_type(void)
24 {
25 	return (rmobile_get_prr() & 0x00007F00) >> 8;
26 }
27 
rmobile_get_cpu_rev_integer(void)28 u32 rmobile_get_cpu_rev_integer(void)
29 {
30 	const u32 prr = rmobile_get_prr();
31 
32 	if ((prr & PRR_MASK) == R8A7796_REV_1_1)
33 		return 1;
34 	else
35 		return ((prr & 0x000000F0) >> 4) + 1;
36 }
37 
rmobile_get_cpu_rev_fraction(void)38 u32 rmobile_get_cpu_rev_fraction(void)
39 {
40 	const u32 prr = rmobile_get_prr();
41 
42 	if ((prr & PRR_MASK) == R8A7796_REV_1_1)
43 		return 1;
44 	else
45 		return prr & 0x0000000F;
46 }
47