Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / dfu / dfu_ram.c

diff --git a/qemu/roms/u-boot/drivers/dfu/dfu_ram.c b/qemu/roms/u-boot/drivers/dfu/dfu_ram.c
new file mode 100644 (file)
index 0000000..335a8e1
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/dfu/dfu_ram.c
@@ -0,0 +1,77 @@
+/*
+ * (C) Copyright 2013
+ * Afzal Mohammed <afzal.mohd.ma@gmail.com>
+ *
+ * Reference: dfu_mmc.c
+ * Copyright (C) 2012 Samsung Electronics
+ * author: Lukasz Majewski <l.majewski@samsung.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <dfu.h>
+
+static int dfu_transfer_medium_ram(enum dfu_op op, struct dfu_entity *dfu,
+                                  u64 offset, void *buf, long *len)
+{
+       if (dfu->layout != DFU_RAM_ADDR) {
+               error("unsupported layout: %s\n", dfu_get_layout(dfu->layout));
+               return  -EINVAL;
+       }
+
+       if (offset > dfu->data.ram.size) {
+               error("request exceeds allowed area\n");
+               return -EINVAL;
+       }
+
+       if (op == DFU_OP_WRITE)
+               memcpy(dfu->data.ram.start + offset, buf, *len);
+       else
+               memcpy(buf, dfu->data.ram.start + offset, *len);
+
+       return 0;
+}
+
+static int dfu_write_medium_ram(struct dfu_entity *dfu, u64 offset,
+                               void *buf, long *len)
+{
+       return dfu_transfer_medium_ram(DFU_OP_WRITE, dfu, offset, buf, len);
+}
+
+static int dfu_read_medium_ram(struct dfu_entity *dfu, u64 offset,
+                              void *buf, long *len)
+{
+       if (!*len) {
+               *len = dfu->data.ram.size;
+               return 0;
+       }
+
+       return dfu_transfer_medium_ram(DFU_OP_READ, dfu, offset, buf, len);
+}
+
+int dfu_fill_entity_ram(struct dfu_entity *dfu, char *s)
+{
+       char *st;
+
+       dfu->dev_type = DFU_DEV_RAM;
+       st = strsep(&s, " ");
+       if (strcmp(st, "ram")) {
+               error("unsupported device: %s\n", st);
+               return -ENODEV;
+       }
+
+       dfu->layout = DFU_RAM_ADDR;
+       dfu->data.ram.start = (void *)simple_strtoul(s, &s, 16);
+       s++;
+       dfu->data.ram.size = simple_strtoul(s, &s, 16);
+
+       dfu->write_medium = dfu_write_medium_ram;
+       dfu->read_medium = dfu_read_medium_ram;
+
+       dfu->inited = 0;
+
+       return 0;
+}