BUS
17 Jun 2024
Read time: 1 minute(s)
总线框图如下所示:
地址空间定义 | CPU SYSMAP 硬件定义(机器模式内存属性) | |||||||
---|---|---|---|---|---|---|---|---|
空间段 | 起始地址 | 结束地址 | 大小 | 变量 | ADDR | SO | C | B |
BROM | 0x00000000 | 0x000FFFFF | 1 MB | SYSMAP_BASE_ADDR0 | 28'h00100 | 0 | 1 | 1 |
SRAM | 0x00100000 | 0x0FFFFFFF | 255 MB | SYSMAP_BASE_ADDR1 | 28'h00100 | 0 | 1 | 1 |
DEVICE | 0x10000000 | 0x1FFFFFFF | 256 MB | SYSMAP_BASE_ADDR2 | 28'h20000 | 1 | 0 | 0 |
C906 | 0x20000000 | 0x2FFFFFFF | 256 MB | SYSMAP_BASE_ADDR3 | 28'h30000 | 1 | 0 | 0 |
RESERVE0 | 0x30000000 | 0x3FFFFFFF | 256 MB | SYSMAP_BASE_ADDR4 | 28'h40000 | 0 | 1 | 1 |
DRAM | 0x40000000 | 0x7FFFFFFF | 1 GB | SYSMAP_BASE_ADDR5 | 28'h80000 | 0 | 1 | 1 |
RESERVE1 | 0x80000000 | 0xBFFFFFFF | 1 GB | SYSMAP_BASE_ADDR6 | 28'hC0000 | 0 | 1 | 1 |
RESERVE2 | 0xC0000000 | 0xFFFFFFFF | 1 GB | SYSMAP_BASE_ADDR7 | 28'h100000 | 0 | 1 | 1 |