v4.19.13 snapshot.
diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c
new file mode 100644
index 0000000..2cde28e
--- /dev/null
+++ b/drivers/mtd/maps/pxa2xx-flash.c
@@ -0,0 +1,144 @@
+/*
+ * Map driver for Intel XScale PXA2xx platforms.
+ *
+ * Author: Nicolas Pitre
+ * Copyright: (C) 2001 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+#include <mach/hardware.h>
+
+#include <asm/mach/flash.h>
+
+#define CACHELINESIZE 32
+
+static void pxa2xx_map_inval_cache(struct map_info *map, unsigned long from,
+ ssize_t len)
+{
+ unsigned long start = (unsigned long)map->cached + from;
+ unsigned long end = start + len;
+
+ start &= ~(CACHELINESIZE - 1);
+ while (start < end) {
+ /* invalidate D cache line */
+ asm volatile ("mcr p15, 0, %0, c7, c6, 1" : : "r" (start));
+ start += CACHELINESIZE;
+ }
+}
+
+struct pxa2xx_flash_info {
+ struct mtd_info *mtd;
+ struct map_info map;
+};
+
+static const char * const probes[] = { "RedBoot", "cmdlinepart", NULL };
+
+static int pxa2xx_flash_probe(struct platform_device *pdev)
+{
+ struct flash_platform_data *flash = dev_get_platdata(&pdev->dev);
+ struct pxa2xx_flash_info *info;
+ struct resource *res;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ info = kzalloc(sizeof(struct pxa2xx_flash_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->map.name = flash->name;
+ info->map.bankwidth = flash->width;
+ info->map.phys = res->start;
+ info->map.size = resource_size(res);
+
+ info->map.virt = ioremap(info->map.phys, info->map.size);
+ if (!info->map.virt) {
+ printk(KERN_WARNING "Failed to ioremap %s\n",
+ info->map.name);
+ return -ENOMEM;
+ }
+ info->map.cached =
+ ioremap_cached(info->map.phys, info->map.size);
+ if (!info->map.cached)
+ printk(KERN_WARNING "Failed to ioremap cached %s\n",
+ info->map.name);
+ info->map.inval_cache = pxa2xx_map_inval_cache;
+ simple_map_init(&info->map);
+
+ printk(KERN_NOTICE
+ "Probing %s at physical address 0x%08lx"
+ " (%d-bit bankwidth)\n",
+ info->map.name, (unsigned long)info->map.phys,
+ info->map.bankwidth * 8);
+
+ info->mtd = do_map_probe(flash->map_name, &info->map);
+
+ if (!info->mtd) {
+ iounmap((void *)info->map.virt);
+ if (info->map.cached)
+ iounmap(info->map.cached);
+ return -EIO;
+ }
+ info->mtd->dev.parent = &pdev->dev;
+
+ mtd_device_parse_register(info->mtd, probes, NULL, flash->parts,
+ flash->nr_parts);
+
+ platform_set_drvdata(pdev, info);
+ return 0;
+}
+
+static int pxa2xx_flash_remove(struct platform_device *dev)
+{
+ struct pxa2xx_flash_info *info = platform_get_drvdata(dev);
+
+ mtd_device_unregister(info->mtd);
+
+ map_destroy(info->mtd);
+ iounmap(info->map.virt);
+ if (info->map.cached)
+ iounmap(info->map.cached);
+ kfree(info);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static void pxa2xx_flash_shutdown(struct platform_device *dev)
+{
+ struct pxa2xx_flash_info *info = platform_get_drvdata(dev);
+
+ if (info && mtd_suspend(info->mtd) == 0)
+ mtd_resume(info->mtd);
+}
+#else
+#define pxa2xx_flash_shutdown NULL
+#endif
+
+static struct platform_driver pxa2xx_flash_driver = {
+ .driver = {
+ .name = "pxa2xx-flash",
+ },
+ .probe = pxa2xx_flash_probe,
+ .remove = pxa2xx_flash_remove,
+ .shutdown = pxa2xx_flash_shutdown,
+};
+
+module_platform_driver(pxa2xx_flash_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Nicolas Pitre <nico@fluxnic.net>");
+MODULE_DESCRIPTION("MTD map driver for Intel XScale PXA2xx");