mirror of
https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
92 lines
1.7 KiB
C
92 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
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*
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* Copyright (C) 2013,2014 Renesas Electronics Corporation
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*/
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#include <common.h>
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#include <asm/io.h>
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#define PRR_MASK 0x7fff
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#define R8A7796_REV_1_0 0x5200
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#define R8A7796_REV_1_1 0x5210
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static u32 rmobile_get_prr(void);
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u32 rmobile_get_cpu_type(void)
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{
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return (rmobile_get_prr() & 0x00007F00) >> 8;
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}
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u32 rmobile_get_cpu_rev_integer(void)
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{
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const u32 prr = rmobile_get_prr();
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if ((prr & PRR_MASK) == R8A7796_REV_1_1)
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return 1;
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else
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return ((prr & 0x000000F0) >> 4) + 1;
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}
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u32 rmobile_get_cpu_rev_fraction(void)
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{
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const u32 prr = rmobile_get_prr();
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if ((prr & PRR_MASK) == R8A7796_REV_1_1)
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return 1;
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else
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return prr & 0x0000000F;
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}
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#if !CONFIG_IS_ENABLED(DM) || !CONFIG_IS_ENABLED(SYSCON)
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static u32 rmobile_get_prr(void)
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{
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/*
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* On RCar/RMobile Gen2 and older systems, the PRR is always
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* located at the address below. On newer systems, the PRR
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* may be located at different address, but that information
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* is obtained from DT. This code will be removed when all
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* of the older systems get converted to DM and OF control.
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*/
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return readl(0xFF000044);
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}
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#else
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#include <dm.h>
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#include <syscon.h>
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#include <regmap.h>
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struct renesas_prr_priv {
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fdt_addr_t regs;
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};
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enum {
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PRR_RCAR,
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};
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static u32 rmobile_get_prr(void)
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{
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struct regmap *map;
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map = syscon_get_regmap_by_driver_data(PRR_RCAR);
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if (!map) {
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printf("PRR regmap failed!\n");
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hang();
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}
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return readl(map->base);
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}
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static const struct udevice_id renesas_prr_ids[] = {
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{ .compatible = "renesas,prr", .data = PRR_RCAR },
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{ }
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};
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U_BOOT_DRIVER(renesas_prr) = {
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.name = "renesas_prr",
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.id = UCLASS_SYSCON,
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.of_match = renesas_prr_ids,
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.flags = DM_FLAG_PRE_RELOC,
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};
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#endif
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