Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / powerpc / include / asm / nvram.h

diff --git a/kernel/arch/powerpc/include/asm/nvram.h b/kernel/arch/powerpc/include/asm/nvram.h
new file mode 100644 (file)
index 0000000..09a518b
--- /dev/null
+++ b/kernel/arch/powerpc/include/asm/nvram.h
@@ -0,0 +1,107 @@
+/*
+ * NVRAM definitions and access functions.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _ASM_POWERPC_NVRAM_H
+#define _ASM_POWERPC_NVRAM_H
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <uapi/asm/nvram.h>
+
+/*
+ * Set oops header version to distinguish between old and new format header.
+ * lnx,oops-log partition max size is 4000, header version > 4000 will
+ * help in identifying new header.
+ */
+#define OOPS_HDR_VERSION 5000
+
+struct err_log_info {
+       __be32 error_type;
+       __be32 seq_num;
+};
+
+struct nvram_os_partition {
+       const char *name;
+       int req_size;   /* desired size, in bytes */
+       int min_size;   /* minimum acceptable size (0 means req_size) */
+       long size;      /* size of data portion (excluding err_log_info) */
+       long index;     /* offset of data portion of partition */
+       bool os_partition; /* partition initialized by OS, not FW */
+};
+
+struct oops_log_info {
+       __be16 version;
+       __be16 report_length;
+       __be64 timestamp;
+} __attribute__((packed));
+
+extern struct nvram_os_partition oops_log_partition;
+
+#ifdef CONFIG_PPC_PSERIES
+extern struct nvram_os_partition rtas_log_partition;
+
+extern int nvram_write_error_log(char * buff, int length,
+                                        unsigned int err_type, unsigned int err_seq);
+extern int nvram_read_error_log(char * buff, int length,
+                                        unsigned int * err_type, unsigned int *err_seq);
+extern int nvram_clear_error_log(void);
+extern int pSeries_nvram_init(void);
+#endif /* CONFIG_PPC_PSERIES */
+
+#ifdef CONFIG_MMIO_NVRAM
+extern int mmio_nvram_init(void);
+#else
+static inline int mmio_nvram_init(void)
+{
+       return -ENODEV;
+}
+#endif
+
+extern int __init nvram_scan_partitions(void);
+extern loff_t nvram_create_partition(const char *name, int sig,
+                                    int req_size, int min_size);
+extern int nvram_remove_partition(const char *name, int sig,
+                                       const char *exceptions[]);
+extern int nvram_get_partition_size(loff_t data_index);
+extern loff_t nvram_find_partition(const char *name, int sig, int *out_size);
+
+/* Return partition offset in nvram */
+extern int     pmac_get_partition(int partition);
+
+/* Direct access to XPRAM on PowerMacs */
+extern u8      pmac_xpram_read(int xpaddr);
+extern void    pmac_xpram_write(int xpaddr, u8 data);
+
+/* Synchronize NVRAM */
+extern void    nvram_sync(void);
+
+/* Initialize NVRAM OS partition */
+extern int __init nvram_init_os_partition(struct nvram_os_partition *part);
+
+/* Initialize NVRAM oops partition */
+extern void __init nvram_init_oops_partition(int rtas_partition_exists);
+
+/* Read a NVRAM partition */
+extern int nvram_read_partition(struct nvram_os_partition *part, char *buff,
+                               int length, unsigned int *err_type,
+                               unsigned int *error_log_cnt);
+
+/* Write to NVRAM OS partition */
+extern int nvram_write_os_partition(struct nvram_os_partition *part,
+                                   char *buff, int length,
+                                   unsigned int err_type,
+                                   unsigned int error_log_cnt);
+
+/* Determine NVRAM size */
+extern ssize_t nvram_get_size(void);
+
+/* Normal access to NVRAM */
+extern unsigned char nvram_read_byte(int i);
+extern void nvram_write_byte(unsigned char c, int i);
+#endif /* _ASM_POWERPC_NVRAM_H */