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https://github.com/AsahiLinux/u-boot
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3e5f3dbe3a
Add CPU info support for RZ/G2 SoC's. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
134 lines
2.8 KiB
C
134 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
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* (C) Copyright 2012-2021 Renesas Solutions Corp.
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <asm/cache.h>
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#include <init.h>
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#include <asm/io.h>
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#include <env.h>
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#include <linux/ctype.h>
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#ifdef CONFIG_ARCH_CPU_INIT
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int arch_cpu_init(void)
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{
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icache_enable();
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return 0;
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}
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#endif
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/* R-Car Gen3 D-cache is enabled in memmap-gen3.c */
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#ifndef CONFIG_RCAR_GEN3
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#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
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void enable_caches(void)
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{
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dcache_enable();
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}
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#endif
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#endif
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#ifdef CONFIG_DISPLAY_CPUINFO
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#ifndef CONFIG_RZA1
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__weak const u8 *rzg_get_cpu_name(void)
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{
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return 0;
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}
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static u32 __rmobile_get_cpu_type(void)
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{
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return 0x0;
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}
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u32 rmobile_get_cpu_type(void)
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__attribute__((weak, alias("__rmobile_get_cpu_type")));
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static u32 __rmobile_get_cpu_rev_integer(void)
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{
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return 0;
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}
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u32 rmobile_get_cpu_rev_integer(void)
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__attribute__((weak, alias("__rmobile_get_cpu_rev_integer")));
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static u32 __rmobile_get_cpu_rev_fraction(void)
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{
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return 0;
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}
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u32 rmobile_get_cpu_rev_fraction(void)
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__attribute__((weak, alias("__rmobile_get_cpu_rev_fraction")));
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/* CPU information table */
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static const struct {
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u16 cpu_type;
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u8 cpu_name[10];
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} rmobile_cpuinfo[] = {
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{ RMOBILE_CPU_TYPE_SH73A0, "SH73A0" },
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{ RMOBILE_CPU_TYPE_R8A7740, "R8A7740" },
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{ RMOBILE_CPU_TYPE_R8A7790, "R8A7790" },
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{ RMOBILE_CPU_TYPE_R8A7791, "R8A7791" },
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{ RMOBILE_CPU_TYPE_R8A7792, "R8A7792" },
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{ RMOBILE_CPU_TYPE_R8A7793, "R8A7793" },
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{ RMOBILE_CPU_TYPE_R8A7794, "R8A7794" },
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{ RMOBILE_CPU_TYPE_R8A7795, "R8A7795" },
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{ RMOBILE_CPU_TYPE_R8A7796, "R8A7796" },
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{ RMOBILE_CPU_TYPE_R8A77965, "R8A77965" },
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{ RMOBILE_CPU_TYPE_R8A77970, "R8A77970" },
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{ RMOBILE_CPU_TYPE_R8A77980, "R8A77980" },
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{ RMOBILE_CPU_TYPE_R8A77990, "R8A77990" },
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{ RMOBILE_CPU_TYPE_R8A77995, "R8A77995" },
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{ 0x0, "CPU" },
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};
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static int rmobile_cpuinfo_idx(void)
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{
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int i = 0;
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u32 cpu_type = rmobile_get_cpu_type();
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for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++)
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if (rmobile_cpuinfo[i].cpu_type == cpu_type)
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break;
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return i;
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}
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static const u8 *get_cpu_name(int idx)
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{
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const u8 *cpu_name = rzg_get_cpu_name();
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return cpu_name ? cpu_name : rmobile_cpuinfo[idx].cpu_name;
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}
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#ifdef CONFIG_ARCH_MISC_INIT
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int arch_misc_init(void)
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{
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int i, idx = rmobile_cpuinfo_idx();
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const u8 *cpu_name = get_cpu_name(idx);
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char cpu[10] = { 0 };
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for (i = 0; i < sizeof(cpu); i++)
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cpu[i] = tolower(cpu_name[i]);
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env_set("platform", cpu);
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return 0;
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}
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#endif
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int print_cpuinfo(void)
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{
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int i = rmobile_cpuinfo_idx();
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printf("CPU: Renesas Electronics %s rev %d.%d\n",
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get_cpu_name(i), rmobile_get_cpu_rev_integer(),
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rmobile_get_cpu_rev_fraction());
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return 0;
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}
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#else
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int print_cpuinfo(void)
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{
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printf("CPU: Renesas Electronics RZ/A1\n");
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return 0;
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}
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#endif
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#endif /* CONFIG_DISPLAY_CPUINFO */
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