xref: /openbmc/u-boot/doc/README.sh7752evb (revision c66f5620)
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2Renesas R0P7752C00000RZ board
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4
5This board specification:
6=========================
7
8The R0P7752C00000RZ(board config name:sh7752evb) has the following device:
9
10 - SH7752 (SH-4A)
11 - DDR3-SDRAM 512MB
12 - SPI ROM 8MB
13 - Gigabit Ethernet controllers
14 - eMMC 4GB
15
16
17Configuration for This board:
18=============================
19
20You can select the configuration as follows:
21
22 - make sh7752evb_config
23
24
25This board specific command:
26============================
27
28This board has the following its specific command:
29
30 - write_mac
31
32
331. write_mac
34
35You can write MAC address to SPI ROM.
36
37 Usage 1) Write MAC address
38
39   write_mac [GETHERC ch0] [GETHERC ch1]
40
41	For example)
42	 => write_mac 74:90:50:00:33:9e 74:90:50:00:33:9f
43		*) We have to input the command as a single line
44		   (without carriage return)
45		*) We have to reset after input the command.
46
47 Usage 2) Show current data
48
49   write_mac
50
51	For example)
52		=> write_mac
53		GETHERC ch0 = 74:90:50:00:33:9e
54		GETHERC ch1 = 74:90:50:00:33:9f
55
56
57Update SPI ROM:
58============================
59
601. Copy u-boot image to RAM area.
612. Probe SPI device.
62   => sf probe 0
63   SF: Detected MX25L6405D with page size 64KiB, total 8 MiB
643. Erase SPI ROM.
65   => sf erase 0 80000
664. Write u-boot image to SPI ROM.
67   => sf write 0x48000000 0 80000
68