sh: Add updating method of SPI ROM to README of sh7757lcr
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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@ -61,3 +61,17 @@ You can write MAC address to SPI ROM.
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ETHERC ch1 = 00:00:87:6c:21:81
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GETHERC ch0 = 00:00:87:6c:21:82
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GETHERC ch1 = 00:00:87:6c:21:83
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Update SPI ROM:
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============================
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1. Copy u-boot image to RAM area.
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2. Probe SPI device.
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=> sf probe 0
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8192 KiB M25P64 at 0:0 is now current device
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3. Erase SPI ROM.
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=> sf erase 0 80000
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4. Write u-boot image to SPI ROM.
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=> sf write 0x89000000 0 80000
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