soc/mediatek/mt8192: Move flash_controller.c to common/

The flash controller driver can be shared among mt8173 and mt819x.

TEST=boot to kernel on Asurada
     boot to kernel on Hana (w/o BL31)

Change-Id: I4e5213563189336496122a0f2d8077b3e5245314
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48972
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>

1 files changed, 0 insertions, 236 deletions

diff --git a/src/soc/mediatek/mt8173/flash_controller.c b/src/soc/mediatek/mt8173/flash_controller.c
deleted file mode 100644
index 64eff2e309..0000000000
--- a/src/soc/mediatek/mt8173/flash_controller.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-/* NOR Flash is clocked with 26MHz, from CLK26M -> TOP_SPINFI_IFR */
-
-#include <device/mmio.h>
-#include <assert.h>
-#include <console/console.h>
-#include <spi_flash.h>
-#include <spi-generic.h>
-#include <string.h>
-#include <symbols.h>
-#include <timer.h>
-#include <soc/symbols.h>
-#include <soc/flash_controller.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(&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;
-}
-
-static int dma_read(u32 addr, u8 *buf, u32 len, uintptr_t dma_buf,
-		    size_t dma_buf_len)
-{
-	struct stopwatch sw;
-
-	assert(IS_ALIGNED((uintptr_t)buf, SFLASH_DMA_ALIGN) &&
-	       IS_ALIGNED(len, SFLASH_DMA_ALIGN) &&
-	       len <= dma_buf_len);
-
-	/* do dma reset */
-	write32(&mt8173_nor->fdma_ctl, SFLASH_DMA_SW_RESET);
-	write32(&mt8173_nor->fdma_ctl, SFLASH_DMA_WDLE_EN);
-	/* flash source address and dram dest address */
-	write32(&mt8173_nor->fdma_fadr, addr);
-	write32(&mt8173_nor->fdma_dadr, dma_buf);
-	write32(&mt8173_nor->fdma_end_dadr, (dma_buf + len));
-	/* start dma */
-	write32(&mt8173_nor->fdma_ctl, SFLASH_DMA_TRIGGER | SFLASH_DMA_WDLE_EN);
-
-	stopwatch_init_usecs_expire(&sw, SFLASH_POLLINGREG_US);
-	while ((read32(&mt8173_nor->fdma_ctl) & SFLASH_DMA_TRIGGER) != 0) {
-		if (stopwatch_expired(&sw)) {
-			printk(BIOS_WARNING, "dma read timeout!\n");
-			return -1;
-		}
-	}
-
-	memcpy(buf, (const void *)dma_buf, len);
-	return 0;
-}
-
-static int pio_read(u32 addr, u8 *buf, u32 len)
-{
-	set_sfpaddr(addr);
-	while (len) {
-		if (mt8173_nor_execute_cmd(SFLASH_RD_TRIGGER | SFLASH_AUTOINC))
-			return -1;
-
-		*buf++ = read8(&mt8173_nor->rdata);
-		len--;
-	}
-	return 0;
-}
-
-static int nor_read(const struct spi_flash *flash, u32 addr, size_t len,
-		void *buf)
-{
-	u32 next;
-
-	size_t done = 0;
-	uintptr_t dma_buf;
-	size_t dma_buf_len;
-
-	if (!IS_ALIGNED((uintptr_t)buf, SFLASH_DMA_ALIGN)) {
-		next = MIN(ALIGN_UP((uintptr_t)buf, SFLASH_DMA_ALIGN) -
-			   (uintptr_t)buf, len);
-		if (pio_read(addr, buf, next))
-			return -1;
-		done += next;
-	}
-
-	if (ENV_BOOTBLOCK || ENV_SEPARATE_VERSTAGE) {
-		dma_buf = (uintptr_t)_dma_coherent;
-		dma_buf_len = REGION_SIZE(dma_coherent);
-	} else {
-		dma_buf = (uintptr_t)_dram_dma;
-		dma_buf_len = REGION_SIZE(dram_dma);
-	}
-
-	while (len - done >= SFLASH_DMA_ALIGN) {
-		next = MIN(dma_buf_len, ALIGN_DOWN(len - done,
-			   SFLASH_DMA_ALIGN));
-		if (dma_read(addr + done, buf + done, next, dma_buf,
-			     dma_buf_len))
-			return -1;
-		done += next;
-	}
-	next = len - done;
-	if (next > 0 && pio_read(addr + done, buf + done, next))
-		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(&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(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 0x%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(&mt8173_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;
-}