Changeset 1427

Timestamp:

09/03/11 20:37:52 (9 months ago)

Author:

uwe

Message:

Add support for the Linux SPI subsystem (spidev).

See  http://www.kernel.org/doc/Documentation/spi/spidev for an introduction.

Usage is as follows:

flashrom -p linux_spi:dev=/dev/spidevX.Y

where X is the bus number, and Y device. It accepts an optional parameter
'speed' which allows to set the SPI clock speed in kHz.

Tested on an Atmel AVR32AP7000 board (NGW100 Network Gateway Kit), see
below, which was used to program a ThinkPad? X60, but it should work on every
other Linux system, too.

 http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4102)

Signed-off-by: Sven Schnelle <svens@…>
Acked-by: Uwe Hermann <uwe@…>

Location:

trunk

Files:

• Makefile (modified) (2 diffs)
• flashrom.c (modified) (2 diffs)
• linux_spi.c (added)
• programmer.h (modified) (3 diffs)

trunk/Makefile

@@ -314 +314 @@
 CONFIG_BUSPIRATE_SPI ?= yes
 
+# Disable Linux spidev interface support for now, until we check for a Linux
+# device (not host, as DOS binaries for example are built on a Linux host).
+CONFIG_LINUX_SPI ?= no
+
 # Disable Dediprog SF100 until support is complete and tested.
 CONFIG_DEDIPROG ?= no
@@ -448 +452 @@
 PROGRAMMER_OBJS += buspirate_spi.o
 NEED_SERIAL := yes
+endif
+
+ifeq ($(CONFIG_LINUX_SPI), yes)
+FEATURE_CFLAGS += -D'CONFIG_LINUX_SPI=1'
+PROGRAMMER_OBJS += linux_spi.o
 endif
 

trunk/flashrom.c

@@ -105 +105 @@
         PROGRAMMER_SATAMV
 #endif
+#if CONFIG_LINUX_SPI == 1
+        PROGRAMMER_LINUX_SPI
+#endif
 ;
 #endif
@@ -445 +448 @@
                 .chip_readn             = fallback_chip_readn,
                 .chip_writeb            = satamv_chip_writeb,
+                .chip_writew            = fallback_chip_writew,
+                .chip_writel            = fallback_chip_writel,
+                .chip_writen            = fallback_chip_writen,
+                .delay                  = internal_delay,
+        },
+#endif
+
+#if CONFIG_LINUX_SPI == 1
+        {
+                .name                   = "linux_spi",
+                .init                   = linux_spi_init,
+                .map_flash_region       = fallback_map,
+                .unmap_flash_region     = fallback_unmap,
+                .chip_readb             = noop_chip_readb,
+                .chip_readw             = fallback_chip_readw,
+                .chip_readl             = fallback_chip_readl,
+                .chip_readn             = fallback_chip_readn,
+                .chip_writeb            = noop_chip_writeb,
                 .chip_writew            = fallback_chip_writew,
                 .chip_writel            = fallback_chip_writel,

trunk/programmer.h

@@ -79 +79 @@
 #if CONFIG_SATAMV == 1
         PROGRAMMER_SATAMV,
+#endif
+#if CONFIG_LINUX_SPI == 1
+        PROGRAMMER_LINUX_SPI,
 #endif
         PROGRAMMER_INVALID /* This must always be the last entry. */
@@ -486 +489 @@
 #endif
 
+/* linux_spi.c */
+#if CONFIG_LINUX_SPI == 1
+int linux_spi_init(void);
+#endif
+
 /* dediprog.c */
 #if CONFIG_DEDIPROG == 1
@@ -536 +544 @@
 #if CONFIG_OGP_SPI == 1 || CONFIG_NICINTEL_SPI == 1 || CONFIG_RAYER_SPI == 1 || (CONFIG_INTERNAL == 1 && (defined(__i386__) || defined(__x86_64__)))
         SPI_CONTROLLER_BITBANG,
+#endif
+#if CONFIG_LINUX_SPI == 1
+        SPI_CONTROLLER_LINUX,
 #endif
 };