?? rw4_init.s
字號:
#define VESTA#include "ppc_40x.h"# .align 2 .text## added by linguohui .extern initb_ebiu0, initb_config, hdw_init_finish .extern initb_hsmc0, initb_hsmc1, initb_cache# end added .globl HdwInit#HdwInit:##-----------------------------------------------------------------------*# If we are not executing from the FLASH get out *#-----------------------------------------------------------------------*# SAW keep this or comment out a la Hawthorne?# r3 contains NIP when used with Linux# rlwinm r28, r3, 8, 24, 31 # if MSB == 0xFF -> FLASH address# cmpwi r28, 0xff# bne locn01###------------------------------------------------------------------------# Init_cpu. Bank registers are setup for the IBM STB.#------------------------------------------------------------------------## Setup processor core clock to be driven off chip. This is GPI4 bit# twenty. Setup Open Drain, Output Select, Three-State Control, and# Three-State Select registers.# pb0pesr = 0x054 pb0pear = 0x056 mflr r30#-----------------------------------------------------------------------------# Vectors will be at 0x1F000000# Dummy Machine check handler just does RFI before true handler gets installed#-----------------------------------------------------------------------------#if 1 /* xuwentao added*/#ifdef SDRAM16MB lis r10,0x0000 addi r10,r10,0x0000#else lis r10,0x1F00 addi r10,r10,0x0000#endif mtspr evpr,r10 #EVPR: 0x0 or 0x1f000000 depending isync # on SDRAM memory model used. lis r10,0xFFFF # clear PB0_PESR because some ori r10,r10,0xFFFF # transitions from flash,changed by linguohui mtdcr pb0pesr,r10 # to load RAM image via RiscWatch lis r10,0x0000 # cause PB0_PESR machine checks mtdcr pb0pear,r10 addis r10,r10,0x0000 # clear the mtxer r10 # XER just in case...#endif /* xuwentao*/ bl initb_ebiu0 # init EBIU bl initb_config # config PPC and board#------------------------------------------------------------------------# EVPR setup moved to top of this function.#------------------------------------------------------------------------# mtlr r30 blr .end
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -