mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-10-24 05:51:33 +02:00
5a3b074255
This adds R-Car Generation 4 (Gen4) support as Renesas ARM64 SoC.
In this version, reusing R-Car Gen3 lowlevel initialize routine [1]
and R-Car Gen3 memory map tables [2] .
[1] arch/arm/mach-rmobile/lowlevel_init_gen3.S
[2] arch/arm/mach-rmobile/memmap-gen3.c
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
[Marek: - Enable DTO support by default
- Sort the Kconfig lists
- Select RCAR_64 Kconfig option to pull in all the shared
Kconfig options with Gen3, and use where applicable to
deduplicate entries.
- Fix reference [2] typo in commit message
- Drop config options moved to Kconfig, rename rest to CFG_
accordingly to synchronize with upstream changes. Drop
removed CONFIG_VERY_BIG_RAM.
- Move board size limit to arch/Kconfig
- Move GICR_BASE to headers instead of common config]
51 lines
983 B
C
51 lines
983 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)
|
|
{
|
|
if (IS_ENABLED(CONFIG_RCAR_64))
|
|
return readl(0xFFF00044);
|
|
|
|
return readl(0xFF000044);
|
|
}
|
|
|
|
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;
|
|
}
|