mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-26 13:03:40 +00:00
8c1de5e08b
Putting zero length array at the end of struct is a common technique to embed arbitrary length of members. There is no good reason to let regmap_alloc_count() branch by "if (count <= 1)". As far as I understood the code, regmap->base is an alias of regmap->ranges[0].start, but it is not helpful but make the code just ugly. Rename regmap_alloc_count() to regmap_alloc() because the _count suffix seems pointless. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org> [trini: fixup cpu_info-rcar.c] Signed-off-by: Tom Rini <trini@konsulko.com>
91 lines
1.7 KiB
C
91 lines
1.7 KiB
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
|
|
|
|
static u32 rmobile_get_prr(void);
|
|
|
|
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();
|
|
|
|
if ((prr & PRR_MASK) == R8A7796_REV_1_1)
|
|
return 1;
|
|
else
|
|
return ((prr & 0x000000F0) >> 4) + 1;
|
|
}
|
|
|
|
u32 rmobile_get_cpu_rev_fraction(void)
|
|
{
|
|
const u32 prr = rmobile_get_prr();
|
|
|
|
if ((prr & PRR_MASK) == R8A7796_REV_1_1)
|
|
return 1;
|
|
else
|
|
return prr & 0x0000000F;
|
|
}
|
|
|
|
#if !CONFIG_IS_ENABLED(DM) || !CONFIG_IS_ENABLED(SYSCON)
|
|
static u32 rmobile_get_prr(void)
|
|
{
|
|
/*
|
|
* On RCar/RMobile Gen2 and older systems, the PRR is always
|
|
* located at the address below. On newer systems, the PRR
|
|
* may be located at different address, but that information
|
|
* is obtained from DT. This code will be removed when all
|
|
* of the older systems get converted to DM and OF control.
|
|
*/
|
|
return readl(0xFF000044);
|
|
}
|
|
#else
|
|
|
|
#include <dm.h>
|
|
#include <syscon.h>
|
|
#include <regmap.h>
|
|
|
|
struct renesas_prr_priv {
|
|
fdt_addr_t regs;
|
|
};
|
|
|
|
enum {
|
|
PRR_RCAR,
|
|
};
|
|
|
|
static u32 rmobile_get_prr(void)
|
|
{
|
|
struct regmap *map;
|
|
|
|
map = syscon_get_regmap_by_driver_data(PRR_RCAR);
|
|
if (!map) {
|
|
printf("PRR regmap failed!\n");
|
|
hang();
|
|
}
|
|
|
|
return readl(map->ranges[0].start);
|
|
}
|
|
|
|
static const struct udevice_id renesas_prr_ids[] = {
|
|
{ .compatible = "renesas,prr", .data = PRR_RCAR },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(renesas_prr) = {
|
|
.name = "renesas_prr",
|
|
.id = UCLASS_SYSCON,
|
|
.of_match = renesas_prr_ids,
|
|
.flags = DM_FLAG_PRE_RELOC,
|
|
};
|
|
#endif
|