From: Eric Nelson Date: Tue, 31 Jan 2012 17:52:08 +0000 (-0700) Subject: README: Add description of SPI Flash (SF) command configuration X-Git-Tag: v2012.04-rc1~157^2 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=f61ec45eb5ad819520396f91385ef3855059c1dd;p=u-boot README: Add description of SPI Flash (SF) command configuration Acked-by: Jason Liu Signed-off-by: Eric Nelson Signed-off-by: Mike Frysinger --- 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