Dima Pulkinen tpimh
tpimh
/ gist:8578126
Last active
January 4, 2016 05:49
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| /* | |
| * Board: JZ-YKS (rev 1) "jz01" | |
| * | |
| * CPU: JZ4725B | |
| * SDRAM: MT48LC32M16A2P-75 | |
| * NAND: K9GAG08U0M | |
| * | |
| * CPU datasheet quotes: | |
| * Operating frequency 360MHz (360000000Hz) CPUSPEED, CFG_CPU_SPEED | |
| * External oscillator 12MHz (12000000Hz) EXTCLK, CFG_EXTAL |
tpimh
/ gist:8539843
Created
January 21, 2014 13:17
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| /* | |
| * IPL (Initial Program Loader, integrated inside CPU) | |
| * Will load first 8k from NAND (SPL) into cache and execute it from there. | |
| * | |
| * SPL (Secondary Program Loader) | |
| * Will load special U-Boot version (NUB) from NAND and execute it. This SPL | |
| * has to fit into 8kByte. It sets up the CPU and configures the SDRAM | |
| * controller and the NAND controller so that the special U-Boot image can be | |
| * loaded from NAND to SDRAM. | |
| * |
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