bnx2x: Separated FW from the source.

>From now on FW will be downloaded from the binary file using request_firmware.

There will be different files for every supported chip. Currently 57710 (e1) and
57711 (e1h).

File names have the following format: bnx2x-<chip version>-<FW version>.fw.
ihex versions of current FW files are submitted in the next patch.

Each binary file has a header in the following format:


struct bnx2x_fw_file_section {
	__be32 len;
	__be32 offset;
}

struct bnx2x_fw_file_hdr {
	struct bnx2x_fw_file_section init_ops;
	struct bnx2x_fw_file_section init_ops_offsets;
	struct bnx2x_fw_file_section init_data;
	struct bnx2x_fw_file_section tsem_int_table_data;
	struct bnx2x_fw_file_section tsem_pram_data;
	struct bnx2x_fw_file_section usem_int_table_data;
	struct bnx2x_fw_file_section usem_pram_data;
	struct bnx2x_fw_file_section csem_int_table_data;
	struct bnx2x_fw_file_section csem_pram_data;
	struct bnx2x_fw_file_section xsem_int_table_data;
	struct bnx2x_fw_file_section xsem_pram_data;
	struct bnx2x_fw_file_section fw_version;
}

Each bnx2x_fw_file_section contains the length and the offset of the appropriate
section in the binary file. Values are stored in the big endian format.

Data types of arrays:

init_data            __be32
init_ops_offsets     __be16
XXsem_pram_data         u8
XXsem_int_table_data    u8
init_ops             struct raw_op {
                          u8   op;
			__be24 offset;
                        __be32 data;
		     }
fw_version              u8

>From now boundaries of a specific initialization stage are stored in
init_ops_offsets array instead of being defined by separate macroes. The index 
in init_ops_offsets is calculated by BLOCK_OPS_IDX macro:

#define BLOCK_OPS_IDX(block, stage, end) \
       (2*(((block)*STAGE_IDX_MAX) + (stage)) + (end))

Security:

In addition to sanity check of array boundaries bnx2x will check a FW version.
Additional checks might be added in the future.

Signed-off-by: Vladislav Zolotarov <[email protected]>
Signed-off-by: Eilon Greenstein <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

drivers/net/Kconfig

@@ -2676,6 +2676,7 @@ config TEHUTI
 config BNX2X
 	tristate "Broadcom NetXtremeII 10Gb support"
 	depends on PCI
+	select FW_LOADER
 	select ZLIB_INFLATE
 	select LIBCRC32C
 	help

drivers/net/bnx2x.h

@@ -965,6 +965,21 @@ struct bnx2x {
 	int			gunzip_outlen;
 #define FW_BUF_SIZE			0x8000
 
+	struct raw_op          *init_ops;
+	/* Init blocks offsets inside init_ops */
+	u16                    *init_ops_offsets;
+	/* Data blob - has 32 bit granularity */
+	u32                    *init_data;
+	/* Zipped PRAM blobs - raw data */
+	const u8               *tsem_int_table_data;
+	const u8               *tsem_pram_data;
+	const u8               *usem_int_table_data;
+	const u8               *usem_pram_data;
+	const u8               *xsem_int_table_data;
+	const u8               *xsem_pram_data;
+	const u8               *csem_int_table_data;
+	const u8               *csem_pram_data;
+        const struct firmware  *firmware;
 };
 
 

drivers/net/bnx2x_fw_file_hdr.h

@@ -0,0 +1,37 @@
+/* bnx2x_fw_file_hdr.h: FW binary file header structure.
+ *
+ * Copyright (c) 2007-2009 Broadcom Corporation
+ *
+ * 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.
+ *
+ * Maintained by: Eilon Greenstein <[email protected]>
+ * Written by: Vladislav Zolotarov <[email protected]>
+ * Based on the original idea of John Wright <[email protected]>.
+ */
+
+#ifndef BNX2X_INIT_FILE_HDR_H
+#define BNX2X_INIT_FILE_HDR_H
+
+struct bnx2x_fw_file_section {
+	__be32 len;
+	__be32 offset;
+};
+
+struct bnx2x_fw_file_hdr {
+	struct bnx2x_fw_file_section init_ops;
+	struct bnx2x_fw_file_section init_ops_offsets;
+	struct bnx2x_fw_file_section init_data;
+	struct bnx2x_fw_file_section tsem_int_table_data;
+	struct bnx2x_fw_file_section tsem_pram_data;
+	struct bnx2x_fw_file_section usem_int_table_data;
+	struct bnx2x_fw_file_section usem_pram_data;
+	struct bnx2x_fw_file_section csem_int_table_data;
+	struct bnx2x_fw_file_section csem_pram_data;
+	struct bnx2x_fw_file_section xsem_int_table_data;
+	struct bnx2x_fw_file_section xsem_pram_data;
+	struct bnx2x_fw_file_section fw_version;
+};
+
+#endif /* BNX2X_INIT_FILE_HDR_H */