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-rw-r--r--src/soc/mediatek/mt8173/Makefile.inc8
-rw-r--r--src/soc/mediatek/mt8173/cbfs.c21
-rw-r--r--src/soc/mediatek/mt8173/flash_controller.c184
-rw-r--r--src/soc/mediatek/mt8173/include/soc/flash_controller.h80
-rw-r--r--src/soc/mediatek/mt8173/spi.c8
5 files changed, 276 insertions, 25 deletions
diff --git a/src/soc/mediatek/mt8173/Makefile.inc b/src/soc/mediatek/mt8173/Makefile.inc
index cbc98555fe..97053a5b96 100644
--- a/src/soc/mediatek/mt8173/Makefile.inc
+++ b/src/soc/mediatek/mt8173/Makefile.inc
@@ -16,7 +16,7 @@
ifeq ($(CONFIG_SOC_MEDIATEK_MT8173),y)
bootblock-y += bootblock.c
-bootblock-y += cbfs.c
+bootblock-$(CONFIG_SPI_FLASH) += flash_controller.c
bootblock-y += pll.c
bootblock-y += spi.c
bootblock-y += timer.c
@@ -38,11 +38,11 @@ verstage-$(CONFIG_DRIVERS_UART) += uart.c
verstage-y += timer.c
verstage-y += wdt.c
-verstage-y += cbfs.c
+verstage-$(CONFIG_SPI_FLASH) += flash_controller.c
################################################################################
-romstage-y += cbfs.c
+romstage-$(CONFIG_SPI_FLASH) += flash_controller.c
romstage-y += timer.c
romstage-$(CONFIG_DRIVERS_UART) += uart.c
@@ -57,7 +57,7 @@ romstage-y += rtc.c
ramstage-y += cbmem.c
ramstage-y += spi.c
-ramstage-y += cbfs.c
+ramstage-$(CONFIG_SPI_FLASH) += flash_controller.c
ramstage-y += soc.c mtcmos.c
ramstage-y += timer.c
ramstage-$(CONFIG_DRIVERS_UART) += uart.c
diff --git a/src/soc/mediatek/mt8173/cbfs.c b/src/soc/mediatek/mt8173/cbfs.c
deleted file mode 100644
index 25348fce66..0000000000
--- a/src/soc/mediatek/mt8173/cbfs.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2015 MediaTek Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <boot_device.h>
-
-const struct region_device *boot_device_ro(void)
-{
- return NULL;
-}
diff --git a/src/soc/mediatek/mt8173/flash_controller.c b/src/soc/mediatek/mt8173/flash_controller.c
new file mode 100644
index 0000000000..3cd81a226a
--- /dev/null
+++ b/src/soc/mediatek/mt8173/flash_controller.c
@@ -0,0 +1,184 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 MediaTek Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+/* NOR Flash is clocked with 26MHz, from CLK26M -> TOP_SPINFI_IFR */
+
+#include <arch/io.h>
+#include <assert.h>
+#include <console/console.h>
+#include <spi_flash.h>
+#include <spi-generic.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <timer.h>
+#include <soc/flash_controller.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(&mt8173_nor->cmd) & val) != 0) {
+ if (stopwatch_expired(&sw))
+ return -1;
+ }
+
+ return 0;
+}
+
+static int mt8173_nor_execute_cmd(u8 cmdval)
+{
+ u8 val = cmdval & ~(SFLASH_AUTOINC);
+
+ write8(&mt8173_nor->cmd, cmdval);
+ return polling_cmd(val);
+}
+
+static int sflashhw_read_flash_status(u8 *value)
+{
+ if (mt8173_nor_execute_cmd(SFLASH_READSTATUS))
+ return -1;
+
+ *value = read8(&mt8173_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(&mt8173_nor->radr[2], get_nth_byte(addr, 2));
+ write8(&mt8173_nor->radr[1], get_nth_byte(addr, 1));
+ write8(&mt8173_nor->radr[0], get_nth_byte(addr, 0));
+}
+
+static int sector_erase(int offset)
+{
+ if (wait_for_write_done())
+ return -1;
+
+ write8(&mt8173_nor->prgdata[5], SFLASH_OP_WREN);
+ write8(&mt8173_nor->cnt, 8);
+ mt8173_nor_execute_cmd(SFLASH_PRG_CMD);
+
+ write8(&mt8173_nor->prgdata[5], SECTOR_ERASE_CMD);
+ write8(&mt8173_nor->prgdata[4], get_nth_byte(offset, 2));
+ write8(&mt8173_nor->prgdata[3], get_nth_byte(offset, 1));
+ write8(&mt8173_nor->prgdata[2], get_nth_byte(offset, 0));
+ write8(&mt8173_nor->cnt, 32);
+ mt8173_nor_execute_cmd(SFLASH_PRG_CMD);
+
+ if (wait_for_write_done())
+ return -1;
+
+ return 0;
+}
+
+unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len)
+{
+ return min(65535, buf_len);
+}
+
+static int nor_read(struct spi_flash *flash, u32 addr, size_t len, void *buf)
+{
+ u8 *buffer = (u8 *)buf;
+
+ set_sfpaddr(addr);
+ while (len) {
+ if (mt8173_nor_execute_cmd(SFLASH_RD_TRIGGER | SFLASH_AUTOINC))
+ return -1;
+
+ *buffer++ = read8(&mt8173_nor->rdata);
+ len--;
+ }
+ return 0;
+}
+
+static int nor_write(struct spi_flash *flash, u32 addr, size_t len,
+ const void *buf)
+{
+ const u8 *buffer = (const u8 *)buf;
+
+ set_sfpaddr(addr);
+ while (len) {
+ write8(&mt8173_nor->wdata, *buffer);
+ if (mt8173_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(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 0x%x!\n",
+ sector_start);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+struct spi_flash *mt8173_nor_flash_probe(struct spi_slave *spi)
+{
+ static struct spi_flash flash = {0};
+
+ if (flash.spi)
+ return &flash;
+
+ write32(&mt8173_nor->wrprot, SFLASH_COMMAND_ENABLE);
+ flash.spi = spi;
+ flash.name = "mt8173 flash controller";
+ flash.write = nor_write;
+ flash.erase = nor_erase;
+ flash.read = nor_read;
+ flash.status = 0;
+ flash.sector_size = 0x1000;
+ flash.erase_cmd = SECTOR_ERASE_CMD;
+ flash.size = CONFIG_ROM_SIZE;
+ return &flash;
+}
diff --git a/src/soc/mediatek/mt8173/include/soc/flash_controller.h b/src/soc/mediatek/mt8173/include/soc/flash_controller.h
new file mode 100644
index 0000000000..2527d6be6a
--- /dev/null
+++ b/src/soc/mediatek/mt8173/include/soc/flash_controller.h
@@ -0,0 +1,80 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 MediaTek Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __SOC_MEDIATEK_MT8173_FLASH_CONTROLLER_H__
+#define __SOC_MEDIATEK_MT8173_FLASH_CONTROLLER_H__
+
+#include <cbfs.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,
+
+ /* 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
+};
+
+/* register Offset */
+struct mt8173_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];
+};
+check_member(mt8173_nor_regs, delsel[2], 0xD8);
+static struct mt8173_nor_regs * const mt8173_nor = (void *)SFLASH_REG_BASE;
+
+struct spi_flash *mt8173_nor_flash_probe(struct spi_slave *spi);
+#endif /* __SOC_MEDIATEK_MT8173_FLASH_CONTROLLER_H__ */
diff --git a/src/soc/mediatek/mt8173/spi.c b/src/soc/mediatek/mt8173/spi.c
index c3c71c3db2..dc674f371e 100644
--- a/src/soc/mediatek/mt8173/spi.c
+++ b/src/soc/mediatek/mt8173/spi.c
@@ -23,6 +23,7 @@
#include <string.h>
#include <timer.h>
#include <soc/addressmap.h>
+#include <soc/flash_controller.h>
#include <soc/gpio.h>
#include <soc/pinmux.h>
#include <soc/pll.h>
@@ -161,6 +162,7 @@ static void mtk_spi_dump_data(const char *name, const uint8_t *data,
struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
{
struct mtk_spi_bus *eslave;
+ static struct spi_slave slave;
switch (bus) {
case CONFIG_EC_GOOGLE_CHROMEEC_SPI_BUS:
@@ -168,6 +170,12 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
assert(read32(&eslave->regs->spi_cfg0_reg) != 0);
spi_sw_reset(eslave->regs);
return &eslave->slave;
+ case CONFIG_BOOT_MEDIA_SPI_BUS:
+ slave.bus = bus;
+ slave.cs = cs;
+ slave.force_programmer_specific = 1;
+ slave.programmer_specific_probe = &mt8173_nor_flash_probe;
+ return &slave;
default:
die ("wrong bus number.\n");
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 20:50:13 +0000