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- UID
- 872238
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#undef LOCAL_MEM_AUTOSIZE /* 运行时内存大小 */
#define LOCAL_MEM_SIZE 0x02000000 /* 32MB 内存缺省 */
#define LOCAL_MEM_LOCAL_ADRS 0x00000000 /* 内存基地址为 0 */
#define USER_RESERVED_MEM 0 /* see sysMemTop() */
/*
* Define SDRAM_ECC_ENABLE to enable ECC if an ECC SDRAM DIMM is detected
* during SDRAM auto-configuration. If not defined, ECC will not be enabled
* if an ECC SDRAM DIMM is detected, and the DIMM will be used as a normal DIMM.
*/
#undef SDRAM_ECC_ENABLE
/* 解释: 这里主要设置系统的内存分配定义,若分配不当,则系统不能正常加载和运行.
ROM_TEXT_ADRS, ROM_SIZE, RAM_HIGH_ADRS, 和RAM_LOW_ADRS 在config.h和Makefile文件中都要定义,且必须要保持一致,这些地址的定义一定要参照VxWorks 加载执行过程,硬件手册,MMU和VxWorks的大小进行.主要原则是保证VxWorks image 在ROM和RAM中都要有一定的运行空间且高效运行,可参见 VxWorks BSP和启动过程.
*/
#define ROM_BASE_ADRS 0xfff80000 /* ROM的基地址 */
#define ROM_TEXT_ADRS (ROM_BASE_ADRS + 0x100) /* 程序指针和堆栈指针 */
#define ROM_Warm_ADRS (ROM_TEXT_ADRS+0x0004) /* 热启动入口地址 */
#define ROM_SIZE 0x0007f000 /* ROM大小 512KB */
#define RAM_LOW_ADRS 0x00010000 /* RAM 低地址运行 vxWorks */
#define RAM_HIGH_ADRS 0x00C00000 /* RAM 高地址存储 bootrom */
#define USER_RESERVED_MEM 0 /* 用户保留地址 */
/*
* Cache options 定义缓存
*/
#define INCLUDE_CACHE_SUPPORT
#define USER_D_CACHE_ENABLE
#define USER_I_CACHE_ENABLE
#undef USER_D_CACHE_MODE
#define USER_D_CACHE_MODE (CACHE_COPYBACK)
/*
* 405 timers (PIT, FIT, WDT) 可由外部时钟驱动或者CPU驱动
*/
#define TIMER_CLOCK_EXTERNAL
/*
* Optional timestamp support
*/
#undef INCLUDE_TIMESTAMP
/*
* Auxilliary Timer rates 定义辅助计时器频率
*/
#ifdef TIMER_CLOCK_EXTERNAL
#define AUX_CLK_RATE_MIN (EXT_TIMER_CLK_FREQ / (1 << 21) )
#define AUX_CLK_RATE_MAX (EXT_TIMER_CLK_FREQ / (1 << 9) )
#define AUX_CLK_RATE_DEFAULT (EXT_TIMER_CLK_FREQ / (1 << 17) )
#else
/* ZZZZZZZZZZZ todo put rates in for system clock derived timer clock */
#endif
/*
* Watchdog Timer rates
*/
#define WDT_RATE_MIN 1 /* minimum watchdog timer rate */
#define WDT_RATE_MAX 5000 /* maximum watchdog timer rate */
/* 实时时钟设置 */
#define INCLUDE_RTC
/* 去除不需要的网络驱动 */
#undef INCLUDE_EI
#undef INCLUDE_EX
#undef INCLUDE_ENP
#undef INCLUDE_LN
#undef INCLUDE_SM_NET
#undef INCLUDE_SM_SEQ_ADDR
/* #define for software floating point support */
#undef INCLUDE_SW_FP
/* 定义串口 Serial port configuration */
#define INCLUDE_SERIAL
/* PCI 设置,PCI configuration */
#define INCLUDE_PCI
#ifdef INCLUDE_PCI
/*
* Three programmable processor local memory address to PCI memory address
* mappings. If a region is enabled, PMMx_LOCAL_ADRS must be between
* PCI_MEMORY_START and PCI_MEMORY_END. If PMMx_PCI_HIGH_ADRS is non-zero in
* an enabled region, 64 bit dual cycle addresses will be generated on the
* PCI bus for this region.
*/
//定义PCI设备的初始化地址 参见 PCI设备(网卡)初始化代码分析
# define PMM0_LOCAL_ADRS PCI_MEMORY_START // 定义PCI空间起始地址
# define PMM0_PCI_LOW_ADRS 0x80000000 // 定义PCI空间低位地址
# define PMM0_PCI_HIGH_ADRS 0x00000000 // 定义PCI空间高位地址
# define PMM0_PCI_MASK_ATTRIB (PMM_MASK_512MB | PMM_ENABLE)
# define PMM1_LOCAL_ADRS PMM_UNUSED
# define PMM1_PCI_LOW_ADRS PMM_UNUSED
# define PMM1_PCI_HIGH_ADRS PMM_UNUSED
# define PMM1_PCI_MASK_ATTRIB PMM_UNUSED
# define PMM2_LOCAL_ADRS PMM_UNUSED
# define PMM2_PCI_LOW_ADRS PMM_UNUSED
# define PMM2_PCI_HIGH_ADRS PMM_UNUSED
# define PMM2_PCI_MASK_ATTRIB PMM_UNUSED
/*
* PCI memory address to processor local memory address mapping. If a region
* is enabled, PTMx_LOCAL_ADRS must be within the two Local memory / peripheral
* regions (0x00000000-0x7FFFFFFF, or 0F0000000-0xFFFFFFFF)
*/
# define PTM1_LOCAL_ADRS LOCAL_MEM_LOCAL_ADRS
# define PTM1_SIZE_ATTRIB PTM_SIZE_2GB | PTM_ENABLE
# define PTM2_LOCAL_ADRS PTM_UNUSED |
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