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authorEric Nelson <eric.nelson@boundarydevices.com>2012-01-31 10:52:08 -0700
committerMike Frysinger <vapier@gentoo.org>2012-02-12 15:18:29 -0500
commitf61ec45eb5ad819520396f91385ef3855059c1dd (patch)
tree90dd43a511137b4d4361cb5eda0eac8820e0fd7c /README
parentc1173bd0754aa55bc52d874d5490c0c892a56ebf (diff)
downloadu-boot-f61ec45eb5ad819520396f91385ef3855059c1dd.tar.gz
README: Add description of SPI Flash (SF) command configuration
Acked-by: Jason Liu <jason.hui@linaro.org> Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'README')
-rw-r--r--README20
1 files changed, 20 insertions, 0 deletions
diff --git a/README b/README
index 43430576b2..52cf37c1f8 100644
--- a/README
+++ b/README
@@ -809,6 +809,7 @@ The following options need to be configured:
(requires CONFIG_CMD_I2C)
CONFIG_CMD_SETGETDCR Support for DCR Register access
(4xx only)
+ CONFIG_CMD_SF * Read/write/erase SPI NOR flash
CONFIG_CMD_SHA1SUM print sha1 memory digest
(requires CONFIG_CMD_MEMORY)
CONFIG_CMD_SOURCE "source" command Support
@@ -2191,6 +2192,25 @@ The following options need to be configured:
allows to read/write in Dataflash via the standard
commands cp, md...
+- Serial Flash support
+ CONFIG_CMD_SF
+
+ Defining this option enables SPI flash commands
+ 'sf probe/read/write/erase/update'.
+
+ Usage requires an initial 'probe' to define the serial
+ flash parameters, followed by read/write/erase/update
+ commands.
+
+ The following defaults may be provided by the platform
+ to handle the common case when only a single serial
+ flash is present on the system.
+
+ CONFIG_SF_DEFAULT_BUS Bus identifier
+ CONFIG_SF_DEFAULT_CS Chip-select
+ CONFIG_SF_DEFAULT_MODE (see include/spi.h)
+ CONFIG_SF_DEFAULT_SPEED in Hz
+
- SystemACE Support:
CONFIG_SYSTEMACE