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2big_nas [2013/06/12 16:18] – hanno2big_nas [2013/07/04 07:57] (current) – hanno
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 ==== Discoveries ==== ==== Discoveries ====
  
-=== I2C devices ===+=== I2C Devices ===
  
 <code> <code>
Line 394: Line 394:
 </code> </code>
  
-^Addr ^Part ^Desc ^ +^Address ^Part ^Description ^ 
-|0x3E|?| | +|0x3E|G762|Fan controller| 
-|0x50 - 0x53|[[http://www.holtek.com/english/docum/memory/24lc08.htm|HT24LC08]]|EEPROM| +|0x50 - 0x53|HT24LC08|1KB EEPROM| 
-|0x64|?| | +|0x64|Debug Port/Serial ROM ?|| 
-|0x68|[[http://www.maximintegrated.com/datasheet/index.mvp/id/3128|DS1337]]|RTC|+|0x68|DS1337|RTC| 
 + 
 +=== EEPROM Data === 
 + 
 +^Offset ^Size ^Value ^Description ^ 
 +|0x000|1|0x00| | 
 +|0x001|1|0x04|EEPROM version| 
 +|0x002|6|unique|MAC address; big endian| 
 +|0x008|6 ?|0xFF| | 
 +|0x00E|1 ?|0x01| | 
 +|0x00F|74 ?|ASCII|Text| 
 +|0x0C5|1 ?|0x01|hmmm...| 
 +|Remainder||0xFF| | 
 + 
 +<code> 
 +2bigNAS> i2c read 0x50 0x0 0x100 0x800000 
 +2bigNAS> i2c read 0x51 0x0 0x100 0x800100 
 +2bigNAS> i2c read 0x52 0x0 0x100 0x800200 
 +2bigNAS> i2c read 0x53 0x0 0x100 0x800300 
 +2bigNAS> md.b 0x800000 0x400 
 +00800000: 00 04 My MA CA dd re ss ff ff ff ff ff ff 01 53    ...............S 
 +00800010: 6c 65 65 70 20 6d 6f 64 65 20 64 69 73 61 62 6c    leep mode disabl 
 +00800020: 65 64 0a 53 65 74 20 6c 65 64 20 6d 6f 64 65 3a    ed.Set led mode: 
 +00800030: 20 73 79 73 74 65 6d 5f 6f 66 66 0a 53 65 74 20     system_off.Set  
 +00800040: 6c 65 64 20 6d 6f 64 65 3a 20 73 79 73 74 65 6d    led mode: system 
 +00800050: 5f 73 74 61 72 74 75 70 0a ff ff ff ff ff ff ff    _startup........ 
 +00800060: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +00800070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +00800080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +00800090: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +008000a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +008000b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +008000c0: ff ff ff ff ff 01 ff ff ff ff ff ff ff ff ff ff    ................ 
 +008000d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +008000e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +008000f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +   :                           :                                     : 
 +   :                           :                                     : 
 +   :                           :                                     : 
 +008003c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +008003d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +008003e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +008003f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................ 
 +</code> 
 + 
 +==== Functional Specs ==== 
 + 
 +=== CPU Address Decoding === 
 +Sheeva CPU core has 13 address windows: 
 +  * 4x for CPU access to DRAM CS 
 +  * 1x for CPU access to internal registers 
 +  * 8x configurable for CPU access to remaining chip resources 
 +== DRAM Windows == 
 +  * 8-bit BASE & SIZE registers 
 +  * BASE corresponds to address bits [31:24] 
 +  * Min. SIZE (0x01) = 16MB; max. SIZE (0xFF) = 4GB 
 +  * SIZE is a mask; only 8 legal values (0x01, 0x03, 0x07, 0x0F, etc.) 
 +== Register Window == 
 +  * Fixed SIZE of 1MB 
 +  * BASE register 
 +== Configurable Windows == 
 +  * 16-bit BASE & SIZE registers 
 +  * BASE corresponds to address bits [31:16] 
 +  * Min. SIZE (0x0001) = 64KB; max. SIZE (0xFFFF) = 4GB 
 +  * SIZE is a mask; 16 legal values 
 +=== SATA Address Decoding === 
 +  * 4x address windows 
 +  * SDRAM and PCIe interface access 
 +=== GbE Address Decoding === 
 +  * 6x address windows 
 +  * SDRAM interface access only 
 +=== USB Address Decoding === 
 +  * 4x address windows per USB port 
 +  * SDRAM interface access only 
 +=== SDIO Address Decoding === 
 +  * 4x programmable address windows 
 +  * SDRAM and PCIe interface access 
 +=== Default Address Map (p.41) === 
 +^Desc ^Size ^Base ^End ^Num ^State ^ 
 +|SDRAM CS0|256MB|0x0000 0000|0x0FFF FFFF| | | 
 +|SDRAM CS1|256MB|0x1000 0000|0x1FFF FFFF| | | 
 +|SDRAM CS2|256MB|0x2000 0000|0x2FFF FFFF| | | 
 +|SDRAM CS3|256MB|0x3000 0000|0x3FFF FFFF| | | 
 +|reserved| |0x4000 0000|0x7FFF FFFF| | | 
 +|PCIe Memory|512MB|0x8000 0000|0x9FFF FFFF| | | 
 +|PCIe-1 Memory|512MB|0xA000 0000|0xBFFF FFFF|(reserved)|6282 guess| 
 +|PCIe I/O|64KB|0xC000 0000|0xC000 FFFF| | | 
 +|PCIe-1 I/O|64KB|0xC001 0000|0xC001 FFFF|(reserved)|6282 guess| 
 +|reserved| |0xC002 0000|0xC800 FFFF| | | 
 +|Security SRAM|64KB (2KB)|0xC801 0000|0xC801 FFFF| | | 
 +|reserved| |0xC802 0000|0xCFFF FFFF| | | 
 +|Internal Registers|1MB|0xD000 0000|0xD00F FFFF| | | 
 +|reserved| |0xD010 0000|0xD7FF FFFF| | | 
 +|NAND Flash|128MB|0xD800 0000|0xDFFF FFFF| | | 
 +|reserved| |0xE000 0000|0xE7FF FFFF| | | 
 +|SPI Flash|128MB|0xE800 0000|0xEFFF FFFF| | | 
 +|BootROM|128MB|0xF000 0000|0xF7FF FFFF| | | 
 +|Boot device|128MB|0xF800 0000|0xFFFF FFFF| | | 
 +=== LaCie Configured Address Map (mvSysHwConfig.h) === 
 +^Desc ^Size ^Base ^Notes ^Num ^State ^ 
 +|SDRAM CS0|256MB|0x00000000| | |dis| 
 +|SDRAM CS1|256MB|0x10000000| | |dis| 
 +|SDRAM CS2|256MB|0x20000000| | |dis| 
 +|SDRAM CS3|256MB|0x30000000| | |dis| 
 +|PEX0 MEM|128M|0x90000000| |0|en| 
 +|PEX1 MEM|128M|0x98000000|6282 only|1|en| 
 +|PEX0 I/O|16M|0xF0000000| |2|en| 
 +|INTER REGS|1M?|0xF1000000| |8|en| 
 +|PEX1 I/O|16M|0xF2000000|6282 only|3|en| 
 +|DEVICE CS2|1M|0xF4000000|Boot ROM|9|dis| 
 +|DEVICE CS1|16M|0xF8000000|SPI|5|en| 
 +|DEVICE CS0|8M|0xF9000000|NAND|4|en| 
 +|CRYPT ENG|64K|0xFB000000| |7|en| 
 +|DEVICE CS3|16M|0xFF000000|Boot device|0xA|dis| 
 + 
 +Wish I found this earlier (kirkwood/cpu.c): Linux expects the internal registers to be at 0xF1000000 
 + 
 +Internal registers base address is set in register offset 0x20080 (arch-kirkwood/kirkwood.h): i.e. 0xF1020080 = 0xF1000000 
2big_nas.1371046680.txt.gz · Last modified: by hanno

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