描述

When I build a VxWorks bootrom using the BSP provided by EDK, if the ppc405Timer.c is in the project file list, the following errors occur:

"C:\Tornado2.2\target\config\bsp_ppc405_0\ppc405Timer.c", line 286: error (dcc:1525): iden

tifier SYS_CLK_RATE_MIN not declared

"C:\Tornado2.2\target\config\bsp_ppc405_0\ppc405Timer.c", line 286: error (dcc:1525): iden

tifier SYS_CLK_RATE_MAX not declared

"C:\Tornado2.2\target\config\bsp_ppc405_0\ppc405Timer.c", line 298: error (dcc:1525): iden

tifier sysTimerClkFreq not declared

"C:\Tornado2.2\target\config\bsp_ppc405_0\ppc405Timer.c", line 465: error (dcc:1525): iden

tifier AUX_CLK_RATE_MIN not declared

"C:\Tornado2.2\target\config\bsp_ppc405_0\ppc405Timer.c", line 465: error (dcc:1525): iden

tifier AUX_CLK_RATE_MAX not declared

"C:\Tornado2.2\target\config\bsp_ppc405_0\ppc405Timer.c", line 544: error (dcc:1525): iden

tifier _EXC_OFF_WD not declared

"C:\Tornado2.2\target\config\bsp_ppc405_0\ppc405Timer.c", line 662: error (dcc:1525): iden

tifier WDT_RATE_MIN not declared

"C:\Tornado2.2\target\config\bsp_ppc405_0\ppc405Timer.c", line 662: error (dcc:1525): iden

tifier WDT_RATE_MAX not declared

解决方案

These undefined symbol errors and non-fatal warnings are caused by missing code in ppc4054Timer.c. Once the following lines are added, the code compiles without errors or warnings:

#include "sysLib.h" /*declares sysHwInit2()*/

#include "ppc405_0.h" /*declares undefined clock rate symbols*/

#include "arch/ppc/excPpcLib.h" /*delclares undefined _EXC_ vector*/

extern int sysTimerClkFreq; /*declaration of a global*/