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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <boot_device.h>
#include <symbols.h>
#include <cbfs.h>
#include <device/mmio.h>
#include <soc/addressmap.h>
#include <soc/spi.h>
#include <soc/clock.h>
#include <console/console.h>
#include <spi_sdcard.h>
/* follow is the FSBL boot device defined by ZSBL of sifive
* FSBL replaced by bootblock of coreboot
* MSEL_SPInx1 -> test if boot from memory-mapped on SPIn
* MSEL_SPInx4 -> test if boot from memory-mapped on QPIn
* MSEL_SPInSD -> test if boot from sdcard mount on SPIn */
#define MSEL_SPI0x1(m) (((m) == 5) || ((m) == 14))
#define MSEL_SPI0x4(m) (((m) == 6) || ((m) == 10) || ((m) == 15))
#define MSEL_SPI1x1(m) ((m) == 12)
#define MSEL_SPI1x4(m) (((m) == 7) || ((m) == 13))
#define MSEL_SPI1SD(m) ((m) == 8)
#define MSEL_SPI2x1(m) ((m) == 9)
#define MSEL_SPI2SD(m) ((m) == 11)
static struct spi_sdcard card;
/* At 0x20000000: A 256MiB long memory-mapped view of the flash at QSPI0 */
static struct mem_region_device spi_mdev =
MEM_REGION_DEV_RO_INIT((void *)0x20000000, CONFIG_ROM_SIZE);
static ssize_t unleashed_sd_readat(const struct region_device *rdev, void *dest,
size_t offset, size_t count)
{
spi_sdcard_read(&card, dest, offset, count);
return count;
}
static const struct region_device_ops unleashed_sd_ops = {
.mmap = mmap_helper_rdev_mmap,
.munmap = mmap_helper_rdev_munmap,
.readat = unleashed_sd_readat,
};
static struct mmap_helper_region_device sd_mdev =
MMAP_HELPER_REGION_INIT(&unleashed_sd_ops, 0, CONFIG_ROM_SIZE);
const struct region_device *boot_device_ro(void)
{
uint32_t m = read32((uint32_t *)FU540_MSEL);
if (MSEL_SPI0x1(m) || MSEL_SPI0x4(m))
return &spi_mdev.rdev;
if (MSEL_SPI2SD(m))
return &sd_mdev.rdev;
die("Wrong configuration of MSEL\n");
return NULL;
}
const static struct fu540_spi_mmap_config spi_mmap_config = {
.cmd_en = 1,
.addr_len = 4,
.pad_cnt = 6,
.cmd_proto = FU540_SPI_PROTO_S,
.addr_proto = FU540_SPI_PROTO_Q,
.data_proto = FU540_SPI_PROTO_Q,
.cmd_code = 0xec,
.pad_code = 0
};
void boot_device_init(void)
{
uint32_t m = read32((uint32_t *)FU540_MSEL);
if (MSEL_SPI0x1(m) || MSEL_SPI0x4(m)) {
struct spi_slave slave;
/* initialize spi controller */
spi_setup_slave(0, 0, &slave);
/* map flash to memory space */
fu540_spi_mmap(&slave, &spi_mmap_config);
return;
}
if (MSEL_SPI2SD(m)) {
spi_sdcard_init(&card, 2, 0);
mmap_helper_device_init(&sd_mdev,
_cbfs_cache, REGION_SIZE(cbfs_cache));
return;
}
die("Wrong configuration of MSEL\n");
}
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