| /****************************************************************************/ |
| |
| /* |
| * mcfdebug.h -- ColdFire Debug Module support. |
| * |
| * (C) Copyright 2001, Lineo Inc. (www.lineo.com) |
| */ |
| |
| /****************************************************************************/ |
| #ifndef mcfdebug_h |
| #define mcfdebug_h |
| /****************************************************************************/ |
| |
| /* Define the debug module registers */ |
| #define MCFDEBUG_CSR 0x0 /* Configuration status */ |
| #define MCFDEBUG_BAAR 0x5 /* BDM address attribute */ |
| #define MCFDEBUG_AATR 0x6 /* Address attribute trigger */ |
| #define MCFDEBUG_TDR 0x7 /* Trigger definition */ |
| #define MCFDEBUG_PBR 0x8 /* PC breakpoint */ |
| #define MCFDEBUG_PBMR 0x9 /* PC breakpoint mask */ |
| #define MCFDEBUG_ABHR 0xc /* High address breakpoint */ |
| #define MCFDEBUG_ABLR 0xd /* Low address breakpoint */ |
| #define MCFDEBUG_DBR 0xe /* Data breakpoint */ |
| #define MCFDEBUG_DBMR 0xf /* Data breakpoint mask */ |
| |
| /* Define some handy constants for the trigger definition register */ |
| #define MCFDEBUG_TDR_TRC_DISP 0x00000000 /* display on DDATA only */ |
| #define MCFDEBUG_TDR_TRC_HALT 0x40000000 /* Processor halt on BP */ |
| #define MCFDEBUG_TDR_TRC_INTR 0x80000000 /* Debug intr on BP */ |
| #define MCFDEBUG_TDR_LXT1 0x00004000 /* TDR level 1 */ |
| #define MCFDEBUG_TDR_LXT2 0x00008000 /* TDR level 2 */ |
| #define MCFDEBUG_TDR_EBL1 0x00002000 /* Enable breakpoint level 1 */ |
| #define MCFDEBUG_TDR_EBL2 0x20000000 /* Enable breakpoint level 2 */ |
| #define MCFDEBUG_TDR_EDLW1 0x00001000 /* Enable data BP longword */ |
| #define MCFDEBUG_TDR_EDLW2 0x10000000 |
| #define MCFDEBUG_TDR_EDWL1 0x00000800 /* Enable data BP lower word */ |
| #define MCFDEBUG_TDR_EDWL2 0x08000000 |
| #define MCFDEBUG_TDR_EDWU1 0x00000400 /* Enable data BP upper word */ |
| #define MCFDEBUG_TDR_EDWU2 0x04000000 |
| #define MCFDEBUG_TDR_EDLL1 0x00000200 /* Enable data BP low low byte */ |
| #define MCFDEBUG_TDR_EDLL2 0x02000000 |
| #define MCFDEBUG_TDR_EDLM1 0x00000100 /* Enable data BP low mid byte */ |
| #define MCFDEBUG_TDR_EDLM2 0x01000000 |
| #define MCFDEBUG_TDR_EDUM1 0x00000080 /* Enable data BP up mid byte */ |
| #define MCFDEBUG_TDR_EDUM2 0x00800000 |
| #define MCFDEBUG_TDR_EDUU1 0x00000040 /* Enable data BP up up byte */ |
| #define MCFDEBUG_TDR_EDUU2 0x00400000 |
| #define MCFDEBUG_TDR_DI1 0x00000020 /* Data BP invert */ |
| #define MCFDEBUG_TDR_DI2 0x00200000 |
| #define MCFDEBUG_TDR_EAI1 0x00000010 /* Enable address BP inverted */ |
| #define MCFDEBUG_TDR_EAI2 0x00100000 |
| #define MCFDEBUG_TDR_EAR1 0x00000008 /* Enable address BP range */ |
| #define MCFDEBUG_TDR_EAR2 0x00080000 |
| #define MCFDEBUG_TDR_EAL1 0x00000004 /* Enable address BP low */ |
| #define MCFDEBUG_TDR_EAL2 0x00040000 |
| #define MCFDEBUG_TDR_EPC1 0x00000002 /* Enable PC BP */ |
| #define MCFDEBUG_TDR_EPC2 0x00020000 |
| #define MCFDEBUG_TDR_PCI1 0x00000001 /* PC BP invert */ |
| #define MCFDEBUG_TDR_PCI2 0x00010000 |
| |
| /* Constants for the address attribute trigger register */ |
| #define MCFDEBUG_AAR_RESET 0x00000005 |
| /* Fields not yet implemented */ |
| |
| /* And some definitions for the writable sections of the CSR */ |
| #define MCFDEBUG_CSR_RESET 0x00100000 |
| #define MCFDEBUG_CSR_PSTCLK 0x00020000 /* PSTCLK disable */ |
| #define MCFDEBUG_CSR_IPW 0x00010000 /* Inhibit processor writes */ |
| #define MCFDEBUG_CSR_MAP 0x00008000 /* Processor refs in emul mode */ |
| #define MCFDEBUG_CSR_TRC 0x00004000 /* Emul mode on trace exception */ |
| #define MCFDEBUG_CSR_EMU 0x00002000 /* Force emulation mode */ |
| #define MCFDEBUG_CSR_DDC_READ 0x00000800 /* Debug data control */ |
| #define MCFDEBUG_CSR_DDC_WRITE 0x00001000 |
| #define MCFDEBUG_CSR_UHE 0x00000400 /* User mode halt enable */ |
| #define MCFDEBUG_CSR_BTB0 0x00000000 /* Branch target 0 bytes */ |
| #define MCFDEBUG_CSR_BTB2 0x00000100 /* Branch target 2 bytes */ |
| #define MCFDEBUG_CSR_BTB3 0x00000200 /* Branch target 3 bytes */ |
| #define MCFDEBUG_CSR_BTB4 0x00000300 /* Branch target 4 bytes */ |
| #define MCFDEBUG_CSR_NPL 0x00000040 /* Non-pipelined mode */ |
| #define MCFDEBUG_CSR_SSM 0x00000010 /* Single step mode */ |
| |
| /* Constants for the BDM address attribute register */ |
| #define MCFDEBUG_BAAR_RESET 0x00000005 |
| /* Fields not yet implemented */ |
| |
| |
| /* This routine wrappers up the wdebug asm instruction so that the register |
| * and value can be relatively easily specified. The biggest hassle here is |
| * that the debug module instructions (2 longs) must be long word aligned and |
| * some pointer fiddling is performed to ensure this. |
| */ |
| static inline void wdebug(int reg, unsigned long data) { |
| unsigned short dbg_spc[6]; |
| unsigned short *dbg; |
| |
| // Force alignment to long word boundary |
| dbg = (unsigned short *)((((unsigned long)dbg_spc) + 3) & 0xfffffffc); |
| |
| // Build up the debug instruction |
| dbg[0] = 0x2c80 | (reg & 0xf); |
| dbg[1] = (data >> 16) & 0xffff; |
| dbg[2] = data & 0xffff; |
| dbg[3] = 0; |
| |
| // Perform the wdebug instruction |
| #if 0 |
| // This strain is for gas which doesn't have the wdebug instructions defined |
| asm( "move.l %0, %%a0\n\t" |
| ".word 0xfbd0\n\t" |
| ".word 0x0003\n\t" |
| :: "g" (dbg) : "a0"); |
| #else |
| // And this is for when it does |
| asm( "wdebug (%0)" :: "a" (dbg)); |
| #endif |
| } |
| |
| #endif |