Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 263 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/drivers/mtd/cfi_mtd.c b/qemu/roms/u-boot/drivers/mtd/cfi_mtd.c
new file mode 100644
index 000000000..ac805ff1e
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/mtd/cfi_mtd.c
@@ -0,0 +1,263 @@
+/*
+ * (C) Copyright 2008 Semihalf
+ *
+ * Written by: Piotr Ziecik <kosmo@semihalf.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <flash.h>
+#include <malloc.h>
+
+#include <asm/errno.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/concat.h>
+#include <mtd/cfi_flash.h>
+
+static struct mtd_info cfi_mtd_info[CFI_MAX_FLASH_BANKS];
+static char cfi_mtd_names[CFI_MAX_FLASH_BANKS][16];
+#ifdef CONFIG_MTD_CONCAT
+static char c_mtd_name[16];
+#endif
+
+static int cfi_mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+	flash_info_t *fi = mtd->priv;
+	size_t a_start = fi->start[0] + instr->addr;
+	size_t a_end = a_start + instr->len;
+	int s_first = -1;
+	int s_last = -1;
+	int error, sect;
+
+	for (sect = 0; sect < fi->sector_count; sect++) {
+		if (a_start == fi->start[sect])
+			s_first = sect;
+
+		if (sect < fi->sector_count - 1) {
+			if (a_end == fi->start[sect + 1]) {
+				s_last = sect;
+				break;
+			}
+		} else {
+			s_last = sect;
+			break;
+		}
+	}
+
+	if (s_first >= 0 && s_first <= s_last) {
+		instr->state = MTD_ERASING;
+
+		flash_set_verbose(0);
+		error = flash_erase(fi, s_first, s_last);
+		flash_set_verbose(1);
+
+		if (error) {
+			instr->state = MTD_ERASE_FAILED;
+			return -EIO;
+		}
+
+		instr->state = MTD_ERASE_DONE;
+		mtd_erase_callback(instr);
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int cfi_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
+	size_t *retlen, u_char *buf)
+{
+	flash_info_t *fi = mtd->priv;
+	u_char *f = (u_char*)(fi->start[0]) + from;
+
+	memcpy(buf, f, len);
+	*retlen = len;
+
+	return 0;
+}
+
+static int cfi_mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
+	size_t *retlen, const u_char *buf)
+{
+	flash_info_t *fi = mtd->priv;
+	u_long t = fi->start[0] + to;
+	int error;
+
+	flash_set_verbose(0);
+	error = write_buff(fi, (u_char*)buf, t, len);
+	flash_set_verbose(1);
+
+	if (!error) {
+		*retlen = len;
+		return 0;
+	}
+
+	return -EIO;
+}
+
+static void cfi_mtd_sync(struct mtd_info *mtd)
+{
+	/*
+	 * This function should wait until all pending operations
+	 * finish. However this driver is fully synchronous, so
+	 * this function returns immediately
+	 */
+}
+
+static int cfi_mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+	flash_info_t *fi = mtd->priv;
+
+	flash_set_verbose(0);
+	flash_protect(FLAG_PROTECT_SET, fi->start[0] + ofs,
+					fi->start[0] + ofs + len - 1, fi);
+	flash_set_verbose(1);
+
+	return 0;
+}
+
+static int cfi_mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+	flash_info_t *fi = mtd->priv;
+
+	flash_set_verbose(0);
+	flash_protect(FLAG_PROTECT_CLEAR, fi->start[0] + ofs,
+					fi->start[0] + ofs + len - 1, fi);
+	flash_set_verbose(1);
+
+	return 0;
+}
+
+static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi)
+{
+	int sect_size = 0;
+	int sect_size_old = 0;
+	int sect;
+	int regions = 0;
+	int numblocks = 0;
+	ulong offset;
+	ulong base_addr;
+
+	/*
+	 * First detect the number of eraseregions so that we can allocate
+	 * the array of eraseregions correctly
+	 */
+	for (sect = 0; sect < fi->sector_count; sect++) {
+		if (sect_size_old != flash_sector_size(fi, sect))
+			regions++;
+		sect_size_old = flash_sector_size(fi, sect);
+	}
+
+	switch (regions) {
+	case 0:
+		return 1;
+	case 1:	/* flash has uniform erase size */
+		mtd->numeraseregions = 0;
+		mtd->erasesize = sect_size_old;
+		return 0;
+	}
+
+	mtd->numeraseregions = regions;
+	mtd->eraseregions = malloc(sizeof(struct mtd_erase_region_info) * regions);
+
+	/*
+	 * Now detect the largest sector and fill the eraseregions
+	 */
+	regions = 0;
+	base_addr = offset = fi->start[0];
+	sect_size_old = flash_sector_size(fi, 0);
+	for (sect = 0; sect < fi->sector_count; sect++) {
+		if (sect_size_old != flash_sector_size(fi, sect)) {
+			mtd->eraseregions[regions].offset = offset - base_addr;
+			mtd->eraseregions[regions].erasesize = sect_size_old;
+			mtd->eraseregions[regions].numblocks = numblocks;
+			/* Now start counting the next eraseregions */
+			numblocks = 0;
+			regions++;
+			offset = fi->start[sect];
+		}
+		numblocks++;
+
+		/*
+		 * Select the largest sector size as erasesize (e.g. for UBI)
+		 */
+		if (flash_sector_size(fi, sect) > sect_size)
+			sect_size = flash_sector_size(fi, sect);
+
+		sect_size_old = flash_sector_size(fi, sect);
+	}
+
+	/*
+	 * Set the last region
+	 */
+	mtd->eraseregions[regions].offset = offset - base_addr;
+	mtd->eraseregions[regions].erasesize = sect_size_old;
+	mtd->eraseregions[regions].numblocks = numblocks;
+
+	mtd->erasesize = sect_size;
+
+	return 0;
+}
+
+int cfi_mtd_init(void)
+{
+	struct mtd_info *mtd;
+	flash_info_t *fi;
+	int error, i;
+#ifdef CONFIG_MTD_CONCAT
+	int devices_found = 0;
+	struct mtd_info *mtd_list[CONFIG_SYS_MAX_FLASH_BANKS];
+#endif
+
+	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
+		fi = &flash_info[i];
+		mtd = &cfi_mtd_info[i];
+
+		memset(mtd, 0, sizeof(struct mtd_info));
+
+		error = cfi_mtd_set_erasesize(mtd, fi);
+		if (error)
+			continue;
+
+		sprintf(cfi_mtd_names[i], "nor%d", i);
+		mtd->name		= cfi_mtd_names[i];
+		mtd->type		= MTD_NORFLASH;
+		mtd->flags		= MTD_CAP_NORFLASH;
+		mtd->size		= fi->size;
+		mtd->writesize		= 1;
+
+		mtd->_erase		= cfi_mtd_erase;
+		mtd->_read		= cfi_mtd_read;
+		mtd->_write		= cfi_mtd_write;
+		mtd->_sync		= cfi_mtd_sync;
+		mtd->_lock		= cfi_mtd_lock;
+		mtd->_unlock		= cfi_mtd_unlock;
+		mtd->priv		= fi;
+
+		if (add_mtd_device(mtd))
+			return -ENOMEM;
+
+#ifdef CONFIG_MTD_CONCAT
+		mtd_list[devices_found++] = mtd;
+#endif
+	}
+
+#ifdef CONFIG_MTD_CONCAT
+	if (devices_found > 1) {
+		/*
+		 * We detected multiple devices. Concatenate them together.
+		 */
+		sprintf(c_mtd_name, "nor%d", devices_found);
+		mtd = mtd_concat_create(mtd_list, devices_found, c_mtd_name);
+
+		if (mtd == NULL)
+			return -ENXIO;
+
+		if (add_mtd_device(mtd))
+			return -ENOMEM;
+	}
+#endif /* CONFIG_MTD_CONCAT */
+
+	return 0;
+}