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