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// SPDX-License-Identifier: GPL-2.0-only
#include <mach/rockchip/bootrom.h>
#include <io.h>
#include <bootsource.h>
#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/kernel.h>
#include <errno.h>
#define BROM_BOOTSOURCE_ID 0x10
#define BROM_BOOTSOURCE_SLOT 0x14
#define BROM_BOOTSOURCE_SLOT_ACTIVE GENMASK(12, 10)
static const void __iomem *rk_iram;
int rockchip_bootsource_get_active_slot(void)
{
if (!rk_iram)
return -EINVAL;
return FIELD_GET(BROM_BOOTSOURCE_SLOT_ACTIVE,
readl(IOMEM(rk_iram) + BROM_BOOTSOURCE_SLOT));
}
struct rk_bootsource {
enum bootsource src;
int instance;
};
static struct rk_bootsource bootdev_map[] = {
[0x1] = { .src = BOOTSOURCE_NAND, .instance = 0 },
[0x2] = { .src = BOOTSOURCE_MMC, .instance = 0 },
[0x3] = { .src = BOOTSOURCE_SPI_NOR, .instance = 0 },
[0x4] = { .src = BOOTSOURCE_SPI_NAND, .instance = 0 },
[0x5] = { .src = BOOTSOURCE_MMC, .instance = 1 },
[0xa] = { .src = BOOTSOURCE_USB, .instance = 0 },
};
void rockchip_parse_bootrom_iram(const void *iram)
{
u32 v;
rk_iram = iram;
v = readl(iram + BROM_BOOTSOURCE_ID);
if (v >= ARRAY_SIZE(bootdev_map))
return;
bootsource_set(bootdev_map[v].src, bootdev_map[v].instance);
}
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