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u-boot/arch/arm/mach-rmobile/cpu_info-rcar.c
Biju Das 7d7913689a arm: rmobile: Identify R8A7796 r1.3 SoC
Add support to identify R8A7796 r1.3 SoC.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
2020-09-26 17:25:43 +02:00

51 lines
985 B
C

// SPDX-License-Identifier: GPL-2.0
/*
* arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
*
* Copyright (C) 2013,2014 Renesas Electronics Corporation
*/
#include <common.h>
#include <asm/io.h>
#define PRR_MASK 0x7fff
#define R8A7796_REV_1_0 0x5200
#define R8A7796_REV_1_1 0x5210
#define R8A7796_REV_1_3 0x5211
static u32 rmobile_get_prr(void)
{
#ifdef CONFIG_RCAR_GEN3
return readl(0xFFF00044);
#else
return readl(0xFF000044);
#endif
}
u32 rmobile_get_cpu_type(void)
{
return (rmobile_get_prr() & 0x00007F00) >> 8;
}
u32 rmobile_get_cpu_rev_integer(void)
{
const u32 prr = rmobile_get_prr();
const u32 rev = prr & PRR_MASK;
if (rev == R8A7796_REV_1_1 || rev == R8A7796_REV_1_3)
return 1;
else
return ((prr & 0x000000F0) >> 4) + 1;
}
u32 rmobile_get_cpu_rev_fraction(void)
{
const u32 prr = rmobile_get_prr();
const u32 rev = prr & PRR_MASK;
if (rev == R8A7796_REV_1_1)
return 1;
else if (rev == R8A7796_REV_1_3)
return 3;
else
return prr & 0x0000000F;
}