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-rw-r--r--src/soc/mediatek/mt8192/Makefile.inc4
-rw-r--r--src/soc/mediatek/mt8192/flash_controller.c172
-rw-r--r--src/soc/mediatek/mt8192/include/soc/flash_controller.h78
-rw-r--r--src/soc/mediatek/mt8192/spi.c11
4 files changed, 265 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8192/Makefile.inc b/src/soc/mediatek/mt8192/Makefile.inc
index 2a825fbdec..01db141950 100644
--- a/src/soc/mediatek/mt8192/Makefile.inc
+++ b/src/soc/mediatek/mt8192/Makefile.inc
@@ -1,6 +1,7 @@
ifeq ($(CONFIG_SOC_MEDIATEK_MT8192),y)
bootblock-y += bootblock.c
+bootblock-y += flash_controller.c
bootblock-y += ../common/gpio.c gpio.c
bootblock-y += ../common/mmu_operations.c
bootblock-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
@@ -8,6 +9,7 @@ bootblock-y += ../common/timer.c
bootblock-y += ../common/uart.c
bootblock-y += ../common/wdt.c
+verstage-y += flash_controller.c
verstage-y += ../common/gpio.c gpio.c
verstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
verstage-y += ../common/timer.c
@@ -15,11 +17,13 @@ verstage-y += ../common/uart.c
romstage-y += ../common/cbmem.c
romstage-y += emi.c
+romstage-y += flash_controller.c
romstage-y += ../common/gpio.c gpio.c
romstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
romstage-y += ../common/timer.c
romstage-y += ../common/uart.c
+ramstage-y += flash_controller.c
ramstage-y += ../common/gpio.c gpio.c
ramstage-y += emi.c
ramstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
diff --git a/src/soc/mediatek/mt8192/flash_controller.c b/src/soc/mediatek/mt8192/flash_controller.c
new file mode 100644
index 0000000000..304e4c353e
--- /dev/null
+++ b/src/soc/mediatek/mt8192/flash_controller.c
@@ -0,0 +1,172 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <assert.h>
+#include <console/console.h>
+#include <device/mmio.h>
+#include <soc/flash_controller.h>
+#include <spi_flash.h>
+#include <spi-generic.h>
+#include <stdint.h>
+#include <string.h>
+#include <timer.h>
+#include <types.h>
+
+#define GET_NTH_BYTE(d, n) ((d >> (8 * n)) & 0xff)
+
+static int polling_cmd(u32 val)
+{
+ struct stopwatch sw;
+
+ stopwatch_init_usecs_expire(&sw, SFLASH_POLLINGREG_US);
+
+ while ((read32(&mt8192_nor->cmd) & val) != 0) {
+ if (stopwatch_expired(&sw))
+ return -1;
+ }
+
+ return 0;
+}
+
+static int mt8192_nor_execute_cmd(u8 cmdval)
+{
+ u8 val = cmdval & ~SFLASH_AUTOINC;
+
+ write8(&mt8192_nor->cmd, cmdval);
+ return polling_cmd(val);
+}
+
+static int sflashhw_read_flash_status(u8 *value)
+{
+ if (mt8192_nor_execute_cmd(SFLASH_READSTATUS))
+ return -1;
+
+ *value = read8(&mt8192_nor->rdsr);
+ return 0;
+}
+
+static int wait_for_write_done(void)
+{
+ struct stopwatch sw;
+ u8 reg;
+
+ stopwatch_init_usecs_expire(&sw, SFLASH_POLLINGREG_US);
+
+ while (sflashhw_read_flash_status(&reg) == 0) {
+ if (!(reg & SFLASH_WRITE_IN_PROGRESS))
+ return 0;
+ if (stopwatch_expired(&sw))
+ return -1;
+ }
+
+ return -1;
+}
+
+/* set serial flash program address */
+static void set_sfpaddr(u32 addr)
+{
+ write8(&mt8192_nor->radr[2], GET_NTH_BYTE(addr, 2));
+ write8(&mt8192_nor->radr[1], GET_NTH_BYTE(addr, 1));
+ write8(&mt8192_nor->radr[0], GET_NTH_BYTE(addr, 0));
+}
+
+static int sector_erase(int offset)
+{
+ if (wait_for_write_done())
+ return -1;
+
+ write8(&mt8192_nor->prgdata[5], SFLASH_OP_WREN);
+ write8(&mt8192_nor->cnt, 8);
+ mt8192_nor_execute_cmd(SFLASH_PRG_CMD);
+
+ write8(&mt8192_nor->prgdata[5], SECTOR_ERASE_CMD);
+ write8(&mt8192_nor->prgdata[4], GET_NTH_BYTE(offset, 2));
+ write8(&mt8192_nor->prgdata[3], GET_NTH_BYTE(offset, 1));
+ write8(&mt8192_nor->prgdata[2], GET_NTH_BYTE(offset, 0));
+ write8(&mt8192_nor->cnt, 32);
+ mt8192_nor_execute_cmd(SFLASH_PRG_CMD);
+
+ if (wait_for_write_done())
+ return -1;
+
+ return 0;
+}
+
+static int pio_read(u32 addr, u8 *buf, u32 len)
+{
+ set_sfpaddr(addr);
+ while (len) {
+ if (mt8192_nor_execute_cmd(SFLASH_RD_TRIGGER | SFLASH_AUTOINC))
+ return -1;
+
+ *buf++ = read8(&mt8192_nor->rdata);
+ len--;
+ }
+ return 0;
+}
+
+static int nor_read(const struct spi_flash *flash, u32 addr, size_t len,
+ void *buf)
+{
+ if (pio_read(addr, buf, len))
+ return -1;
+
+ return 0;
+}
+
+static int nor_write(const struct spi_flash *flash, u32 addr, size_t len,
+ const void *buf)
+{
+ const u8 *buffer = (const u8 *)buf;
+
+ set_sfpaddr(addr);
+ while (len) {
+ write8(&mt8192_nor->wdata, *buffer);
+ if (mt8192_nor_execute_cmd(SFLASH_WR_TRIGGER | SFLASH_AUTOINC))
+ return -1;
+
+ if (wait_for_write_done())
+ return -1;
+ buffer++;
+ len--;
+ }
+ return 0;
+}
+
+static int nor_erase(const struct spi_flash *flash, u32 offset, size_t len)
+{
+ int sector_start = offset;
+ int sector_num = (u32)len / flash->sector_size;
+
+ while (sector_num) {
+ if (!sector_erase(sector_start)) {
+ sector_start += flash->sector_size;
+ sector_num--;
+ } else {
+ printk(BIOS_WARNING, "Erase failed at %#x!\n",
+ sector_start);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+const struct spi_flash_ops spi_flash_ops = {
+ .read = nor_read,
+ .write = nor_write,
+ .erase = nor_erase,
+};
+
+int mtk_spi_flash_probe(const struct spi_slave *spi,
+ struct spi_flash *flash)
+{
+ write32(&mt8192_nor->wrprot, SFLASH_COMMAND_ENABLE);
+ memcpy(&flash->spi, spi, sizeof(*spi));
+
+ flash->sector_size = 0x1000;
+ flash->erase_cmd = SECTOR_ERASE_CMD;
+ flash->size = CONFIG_ROM_SIZE;
+
+ flash->ops = &spi_flash_ops;
+
+ return 0;
+}
diff --git a/src/soc/mediatek/mt8192/include/soc/flash_controller.h b/src/soc/mediatek/mt8192/include/soc/flash_controller.h
new file mode 100644
index 0000000000..5655a9c001
--- /dev/null
+++ b/src/soc/mediatek/mt8192/include/soc/flash_controller.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __SOC_MEDIATEK_MT8192_FLASH_CONTROLLER_H__
+#define __SOC_MEDIATEK_MT8192_FLASH_CONTROLLER_H__
+
+#include <spi-generic.h>
+#include <stdint.h>
+#include <soc/addressmap.h>
+
+enum {
+ SFLASH_POLLINGREG_US = 500000,
+ SFLASH_WRBUF_SIZE = 128,
+ SFLASHNAME_LENGTH = 16,
+ SFLASH_WRITE_IN_PROGRESS = 1,
+ SFLASH_COMMAND_ENABLE = 0x30,
+ SFLASH_DMA_ALIGN = 0x10,
+
+ /* NOR flash controller commands */
+ SFLASH_RD_TRIGGER = 1 << 0,
+ SFLASH_READSTATUS = 1 << 1,
+ SFLASH_PRG_CMD = 1 << 2,
+ SFLASH_WR_TRIGGER = 1 << 4,
+ SFLASH_WRITESTATUS = 1 << 5,
+ SFLASH_AUTOINC = 1 << 7,
+ /* NOR flash commands */
+ SFLASH_OP_WREN = 0x6,
+ SECTOR_ERASE_CMD = 0x20,
+ SFLASH_UNPROTECTED = 0x0,
+ /* DMA commands */
+ SFLASH_DMA_TRIGGER = 1 << 0,
+ SFLASH_DMA_SW_RESET = 1 << 1,
+ SFLASH_DMA_WDLE_EN = 1 << 2
+};
+
+/* register Offset */
+struct mt8192_nor_regs {
+ u32 cmd;
+ u32 cnt;
+ u32 rdsr;
+ u32 rdata;
+ u32 radr[3];
+ u32 wdata;
+ u32 prgdata[6];
+ u32 shreg[10];
+ u32 cfg[2];
+ u32 shreg10;
+ u32 status[5];
+ u32 timing;
+ u32 flash_cfg;
+ u32 reserved2[3];
+ u32 sf_time;
+ u32 reserved3;
+ u32 diff_addr;
+ u32 del_sel[2];
+ u32 intrstus;
+ u32 intren;
+ u32 pp_ctl;
+ u32 cfg3;
+ u32 chksum_ctl;
+ u32 chksum;
+ u32 aaicmd;
+ u32 wrprot;
+ u32 radr3;
+ u32 read_dual;
+ u32 delsel[3];
+ u32 reserved[397];
+ u32 cfg1_bri[2];
+ u32 fdma_ctl;
+ u32 fdma_fadr;
+ u32 fdma_dadr;
+ u32 fdma_end_dadr;
+};
+check_member(mt8192_nor_regs, fdma_end_dadr, 0x724);
+static struct mt8192_nor_regs *const mt8192_nor = (void *)SFLASH_REG_BASE;
+
+int mtk_spi_flash_probe(const struct spi_slave *spi, struct spi_flash *flash);
+
+#endif /* __SOC_MEDIATEK_MT8192_FLASH_CONTROLLER_H__ */
diff --git a/src/soc/mediatek/mt8192/spi.c b/src/soc/mediatek/mt8192/spi.c
index 577536a9f7..d35e5ad3ca 100644
--- a/src/soc/mediatek/mt8192/spi.c
+++ b/src/soc/mediatek/mt8192/spi.c
@@ -3,6 +3,7 @@
#include <device/mmio.h>
#include <assert.h>
#include <soc/addressmap.h>
+#include <soc/flash_controller.h>
#include <soc/gpio.h>
#include <soc/spi.h>
@@ -128,12 +129,22 @@ void mtk_spi_set_timing(struct mtk_spi_regs *regs, u32 sck_ticks, u32 cs_ticks,
((cs_ticks - 1) << SPI_CFG1_CS_IDLE_SHIFT));
}
+static const struct spi_ctrlr spi_flash_ctrlr = {
+ .max_xfer_size = 65535,
+ .flash_probe = mtk_spi_flash_probe,
+};
+
const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
{
.ctrlr = &spi_ctrlr,
.bus_start = 0,
.bus_end = SPI_BUS_NUMBER - 1,
},
+ {
+ .ctrlr = &spi_flash_ctrlr,
+ .bus_start = CONFIG_BOOT_DEVICE_SPI_FLASH_BUS,
+ .bus_end = CONFIG_BOOT_DEVICE_SPI_FLASH_BUS,
+ },
};
const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 14:10:55 +0000