4BA: Flashrom integration for the 4-bytes addressing extensions

This patch integrates code of the previous patch into Flashrom's code.
All the integrations is around 3 functions spi_nbyte_read, spi_nbyte_program
and spi_byte_program. After this patch then are not static and can be called
by their pointers saved in flashchips array. Also I added to flashrom.c some
code to switch a chip to 4-bytes addressing mode. And one error message is
corrected in spi.c because it's not suitable for 32-bit addresses.

Patched files
-------------
flash.h
+ added set of 4-bytes address functions to flashchip structure definition

flashrom.c
+ added switch to 4-bytes addressing more for chips which support it

serprog.c
+ added 4-bytes addressing spi_nbyte_read call to serprog_spi_read

spi.c
+ fixed flash chip size check in spi_chip_read

spi25.c
+ added 4-bytes addressing spi_nbyte_read call to spi_read_chunked
+ added 4-bytes addressing spi_nbyte_program call to spi_write_chunked
+ added 4-bytes addressing spi_byte_program call to spi_chip_write_1

Conflicts:
	serprog.c

Change-Id: Ib051cfc93bd4aa7580519e0e6206d025f3ca8049
Signed-off-by: Boris Baykov <dev@borisbaykov.com>, Russia, Jan 2014
[clg: ported from
      https://www.flashrom.org/pipermail/flashrom/2015-January/013205.html ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-on: https://review.coreboot.org/20505
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/flash.h b/flash.h
index 56c0b4fdc..2219918f6 100644
--- a/flash.h
+++ b/flash.h
@@ -167,6 +167,14 @@ struct flashchip {
 	unsigned int page_size;
 	int feature_bits;
 
+	/* set of function pointers to use in 4-bytes addressing mode */
+	struct four_bytes_addr_funcs_set {
+		int (*enter_4ba) (struct flashctx *flash);
+		int (*read_nbyte) (struct flashctx *flash, unsigned int addr, uint8_t *bytes, unsigned int len);
+		int (*program_byte) (struct flashctx *flash, unsigned int addr, const uint8_t databyte);
+		int (*program_nbyte) (struct flashctx *flash, unsigned int addr, const uint8_t *bytes, unsigned int len);
+	} four_bytes_addr_funcs;
+
 	/* Indicate how well flashrom supports different operations of this flash chip. */
 	struct tested {
 		enum test_state probe;