diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cpu/amd/model_gx2/cpureginit.c | 123 |
1 files changed, 52 insertions, 71 deletions
diff --git a/src/cpu/amd/model_gx2/cpureginit.c b/src/cpu/amd/model_gx2/cpureginit.c index 609147c6c1..bd4dc00d9e 100644 --- a/src/cpu/amd/model_gx2/cpureginit.c +++ b/src/cpu/amd/model_gx2/cpureginit.c @@ -1,134 +1,120 @@ -/* ***************************************************************************/ -/* * cpuRegInit*/ -/* ***************************************************************************/ +/* cpuRegInit */ void cpuRegInit (void) { int msrnum; msr_t msr; - /* Turn on BTM for early debug based on setup. */ - /*if (getnvram( TOKEN_BTM_DIAG_MODE) & 3) {*/ - /* - * The following is only for diagnostics mode; do not use for OLPC - */ + /* Turn on BTM for early debug based on setup. */ + /* if (getnvram( TOKEN_BTM_DIAG_MODE) & 3) { */ + /* The following is only for diagnostics mode; do not use for OLPC */ if (0) { - /* Set Diagnostic Mode */ + /* Set Diagnostic Mode */ msrnum = CPU_GLD_MSR_DIAG; msr.hi = 0; msr.lo = DIAG_SEL1_SET | DIAG_SET0_SET; wrmsr(msrnum, msr); - /* Set up GLCP to grab BTM data.*/ - msrnum = 0x04C00000C; /* GLCP_DBGOUT MSR*/ + /* Set up GLCP to grab BTM data. */ + msrnum = 0x04C00000C; /* GLCP_DBGOUT MSR */ msr.hi = 0x0; - msr.lo = 0x08; /* reset value (SCOPE_SEL = 0) causes FIFO toshift out,*/ - wrmsr(msrnum, msr); /* exchange it to anything else to prevent this*/ + msr.lo = 0x08; /* reset value (SCOPE_SEL = 0) causes FIFO toshift out, */ + wrmsr(msrnum, msr); /* exchange it to anything else to prevent this */ - /* ;Turn off debug clock*/ + /* Turn off debug clock */ msrnum = 0x04C000016; /* DBG_CLK_CTL*/ msr.lo = 0x00; /* No clock*/ msr.hi = 0x00; wrmsr(msrnum, msr); - /* ;Set debug clock to CPU*/ - msrnum = 0x04C000016; /* DBG_CLK_CTL*/ - msr.lo = 0x01; /* CPU CLOCK*/ + /* Set debug clock to CPU */ + msrnum = 0x04C000016; /* DBG_CLK_CTL */ + msr.lo = 0x01; /* CPU CLOCK */ msr.hi = 0x00; wrmsr(msrnum, msr); - /* ;Set fifo ctl to BTM bits wide*/ - msrnum = 0x04C00005E; /* FIFO_CTL*/ - msr.lo = 0x003880000; /* Bit [25:24] are size (11=BTM, 10 = 64 bit, 01= 32 bit, 00 = 16bit)*/ - wrmsr(msrnum, msr); /* Bit [23:21] are position (100 = CPU downto0)*/ - /* Bit [19] sets it up in slow data mode.*/ - - /* ;enable fifo loading - BTM sizing will constrain*/ - /* ; only valid BTM packets to load - this action should always be on*/ + /* Set fifo ctl to BTM bits wide */ + msrnum = 0x04C00005E; /* FIFO_CTL */ + msr.lo = 0x003880000; /* Bit [25:24] are size (11=BTM, 10 = 64 bit, 01= 32 bit, 00 = 16bit) */ + wrmsr(msrnum, msr); /* Bit [23:21] are position (100 = CPU downto0) */ + /* Bit [19] sets it up in slow data mode. */ - msrnum = 0x04C00006F; /* GLCP ACTION7 - load fifo*/ - msr.lo = 0x00000F000; /* Any nibble all 1's will always trigger*/ - msr.hi = 0x000000000; /* */ + /* enable fifo loading - BTM sizing will constrain */ + /* only valid BTM packets to load - this action should always be on */ + msrnum = 0x04C00006F; /* GLCP ACTION7 - load fifo */ + msr.lo = 0x00000F000; /* Any nibble all 1's will always trigger */ + msr.hi = 0x000000000; wrmsr(msrnum, msr); - /* ;start storing diag data in the fifo*/ - msrnum = 0x04C00005F; /* DIAG CTL*/ - msr.lo = 0x080000000; /* enable actions*/ + /* start storing diag data in the fifo */ + msrnum = 0x04C00005F; /* DIAG CTL */ + msr.lo = 0x080000000; /* enable actions */ msr.hi = 0x000000000; wrmsr(msrnum, msr); - /* Set up delay on data lines, so that the hold time*/ - /* is 1 ns.*/ - msrnum = 0x04C00000D ; /* GLCP IO DELAY CONTROLS*/ + /* Set up delay on data lines, so that the hold time */ + /* is 1 ns. */ + msrnum = 0x04C00000D ; /* GLCP IO DELAY CONTROLS */ msr.lo = 0x082b5ad68; - msr.hi = 0x080ad6b57; /* RGB delay = 0x07*/ + msr.hi = 0x080ad6b57; /* RGB delay = 0x07 */ wrmsr(msrnum, msr); - /* Set up DF to output diag information on DF pins.*/ + /* Set up DF to output diag information on DF pins. */ msrnum = DF_GLD_MSR_MASTER_CONF; msr.lo = 0x0220; msr.hi = 0; wrmsr(msrnum, msr); - msrnum = 0x04C00000C ; /* GLCP_DBGOUT MSR*/ + msrnum = 0x04C00000C ; /* GLCP_DBGOUT MSR */ msr.hi = 0x0; - msr.lo = 0x0; /* reset value (SCOPE_SEL = 0) causes FIFO to shift out,*/ + msr.lo = 0x0; /* reset value (SCOPE_SEL = 0) causes FIFO to shift out, */ wrmsr(msrnum, msr); /* end of code for BTM */ } - /* Enable Suspend on Halt*/ + /* Enable Suspend on Halt */ msrnum = CPU_XC_CONFIG; msr = rdmsr(msrnum); msr.lo |= XC_CONFIG_SUSP_ON_HLT; wrmsr(msrnum, msr); - /* ENable SUSP and allow TSC to run in Suspend */ - /* to keep speed detection happy*/ + /* ENable SUSP and allow TSC to run in Suspend */ + /* to keep speed detection happy */ msrnum = CPU_BC_CONF_0; msr = rdmsr(msrnum); msr.lo |= TSC_SUSP_SET | SUSP_EN_SET; wrmsr(msrnum, msr); - /* Setup throttling to proper mode if it is ever enabled.*/ + /* Setup throttling to proper mode if it is ever enabled. */ msrnum = 0x04C00001E; msr.hi = 0x000000000; msr.lo = 0x00000603C; wrmsr(msrnum, msr); - -/* Only do this if we are building for 5535*/ -/* */ -/* FooGlue Setup*/ -/* */ +/* Only do this if we are building for 5535 */ +/* FooGlue Setup */ #if 1 - /* Enable CIS mode B in FooGlue*/ + /* Enable CIS mode B in FooGlue */ msrnum = MSR_FG + 0x10; msr = rdmsr(msrnum); msr.lo &= ~3; - msr.lo |= 2; /* ModeB*/ + msr.lo |= 2; /* ModeB */ wrmsr(msrnum, msr); #endif -/* */ -/* Disable DOT PLL. Graphics init will enable it if needed.*/ -/* */ +/* Disable DOT PLL. Graphics init will enable it if needed. */ msrnum = GLCP_DOTPLL; msr = rdmsr(msrnum); msr.lo |= DOTPPL_LOWER_PD_SET; wrmsr(msrnum, msr); -/* */ -/* Enable RSDC*/ -/* */ +/* Enable RSDC */ msrnum = 0x1301 ; msr = rdmsr(msrnum); msr.lo |= 0x08; wrmsr(msrnum, msr); -/* */ -/* Enable BTB*/ -/* */ - /* I hate to put this check here but it doesn't really work in cpubug.asm*/ +/* Enable BTB */ + /* I hate to put this check here but it doesn't really work in cpubug.asm */ msrnum = MSR_GLCP+0x17; msr = rdmsr(msrnum); if (msr.lo >= CPU_REV_2_1){ @@ -138,10 +124,8 @@ void cpuRegInit (void) wrmsr(msrnum, msr); } -/* */ -/* FPU impercise exceptions bit*/ -/* */ - /*if (getnvram( TOKEN_FPU_IE_ENABLE) != TVALUE_DISABLE) {*/ +/* FPU impercise exceptions bit */ + /* if (getnvram( TOKEN_FPU_IE_ENABLE) != TVALUE_DISABLE) { */ { msrnum = CPU_FPU_MSR_MODE; msr = rdmsr(msrnum); @@ -150,16 +134,13 @@ void cpuRegInit (void) } #if 0 - /* */ - /* Cache Overides*/ - /* */ + /* Cache Overides */ /* This code disables the data cache. Don't execute this * unless you're testing something. */ - /* Allow NVRam to override DM Setup*/ - /*if (getnvram( TOKEN_CACHE_DM_MODE) != 1) {*/ + /* Allow NVRam to override DM Setup */ + /* if (getnvram( TOKEN_CACHE_DM_MODE) != 1) { */ { - msrnum = CPU_DM_CONFIG0; msr = rdmsr(msrnum); msr.lo |= DM_CONFIG0_LOWER_DCDIS_SET; @@ -168,8 +149,8 @@ void cpuRegInit (void) /* This code disables the instruction cache. Don't execute * this unless you're testing something. */ - /* Allow NVRam to override IM Setup*/ - /*if (getnvram( TOKEN_CACHE_IM_MODE) ==1) {*/ + /* Allow NVRam to override IM Setup */ + /* if (getnvram( TOKEN_CACHE_IM_MODE) ==1) { */ { msrnum = CPU_IM_CONFIG; msr = rdmsr(msrnum); |