From f61ec45eb5ad819520396f91385ef3855059c1dd Mon Sep 17 00:00:00 2001 From: Eric Nelson Date: Tue, 31 Jan 2012 10:52:08 -0700 Subject: [PATCH] README: Add description of SPI Flash (SF) command configuration Acked-by: Jason Liu Signed-off-by: Eric Nelson Signed-off-by: Mike Frysinger --- README | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/README b/README index 4343057..52cf37c 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