MIPS: Alchemy: get rid of common/reset.c

[firefly-linux-kernel-4.4.55.git] / arch / mips / alchemy / devboards / platform.c

diff --git a/arch/mips/alchemy/devboards/platform.c b/arch/mips/alchemy/devboards/platform.c
index 48c537cc8efbb96c903c75c0dd3f02f7494825aa..febf4e04234363894886d64e64cf1047517f6fbd 100644 (file)
--- a/arch/mips/alchemy/devboards/platform.c
+++ b/arch/mips/alchemy/devboards/platform.c
@@ -3,8 +3,40 @@
  */
 
 #include <linux/init.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/physmap.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>
+#include <linux/pm.h>
+
+#include <asm/reboot.h>
+#include <asm/mach-db1x00/bcsr.h>
+
+static void db1x_power_off(void)
+{
+       bcsr_write(BCSR_RESETS, 0);
+       bcsr_write(BCSR_SYSTEM, BCSR_SYSTEM_PWROFF | BCSR_SYSTEM_RESET);
+}
+
+static void db1x_reset(char *c)
+{
+       bcsr_write(BCSR_RESETS, 0);
+       bcsr_write(BCSR_SYSTEM, 0);
+}
+
+static int __init db1x_poweroff_setup(void)
+{
+       if (!pm_power_off)
+               pm_power_off = db1x_power_off;
+       if (!_machine_halt)
+               _machine_halt = db1x_power_off;
+       if (!_machine_restart)
+               _machine_restart = db1x_reset;
+
+       return 0;
+}
+late_initcall(db1x_poweroff_setup);
 
 /* register a pcmcia socket */
 int __init db1x_register_pcmcia_socket(unsigned long pseudo_attr_start,
@@ -87,3 +119,104 @@ out:
        kfree(sr);
        return ret;
 }
+
+#define YAMON_SIZE     0x00100000
+#define YAMON_ENV_SIZE 0x00040000
+
+int __init db1x_register_norflash(unsigned long size, int width,
+                                 int swapped)
+{
+       struct physmap_flash_data *pfd;
+       struct platform_device *pd;
+       struct mtd_partition *parts;
+       struct resource *res;
+       int ret, i;
+
+       if (size < (8 * 1024 * 1024))
+               return -EINVAL;
+
+       ret = -ENOMEM;
+       parts = kzalloc(sizeof(struct mtd_partition) * 5, GFP_KERNEL);
+       if (!parts)
+               goto out;
+
+       res = kzalloc(sizeof(struct resource), GFP_KERNEL);
+       if (!res)
+               goto out1;
+
+       pfd = kzalloc(sizeof(struct physmap_flash_data), GFP_KERNEL);
+       if (!pfd)
+               goto out2;
+
+       pd = platform_device_alloc("physmap-flash", 0);
+       if (!pd)
+               goto out3;
+
+       /* NOR flash ends at 0x20000000, regardless of size */
+       res->start = 0x20000000 - size;
+       res->end = 0x20000000 - 1;
+       res->flags = IORESOURCE_MEM;
+
+       /* partition setup.  Most Develboards have a switch which allows
+        * to swap the physical locations of the 2 NOR flash banks.
+        */
+       i = 0;
+       if (!swapped) {
+               /* first NOR chip */
+               parts[i].offset = 0;
+               parts[i].name = "User FS";
+               parts[i].size = size / 2;
+               i++;
+       }
+
+       parts[i].offset = MTDPART_OFS_APPEND;
+       parts[i].name = "User FS 2";
+       parts[i].size = (size / 2) - (0x20000000 - 0x1fc00000);
+       i++;
+
+       parts[i].offset = MTDPART_OFS_APPEND;
+       parts[i].name = "YAMON";
+       parts[i].size = YAMON_SIZE;
+       parts[i].mask_flags = MTD_WRITEABLE;
+       i++;
+
+       parts[i].offset = MTDPART_OFS_APPEND;
+       parts[i].name = "raw kernel";
+       parts[i].size = 0x00400000 - YAMON_SIZE - YAMON_ENV_SIZE;
+       i++;
+
+       parts[i].offset = MTDPART_OFS_APPEND;
+       parts[i].name = "YAMON Env";
+       parts[i].size = YAMON_ENV_SIZE;
+       parts[i].mask_flags = MTD_WRITEABLE;
+       i++;
+
+       if (swapped) {
+               parts[i].offset = MTDPART_OFS_APPEND;
+               parts[i].name = "User FS";
+               parts[i].size = size / 2;
+               i++;
+       }
+
+       pfd->width = width;
+       pfd->parts = parts;
+       pfd->nr_parts = 5;
+
+       pd->dev.platform_data = pfd;
+       pd->resource = res;
+       pd->num_resources = 1;
+
+       ret = platform_device_add(pd);
+       if (!ret)
+               return ret;
+
+       platform_device_put(pd);
+out3:
+       kfree(pfd);
+out2:
+       kfree(res);
+out1:
+       kfree(parts);
+out:
+       return ret;
+}