From 4223188335a07700626637aaa584006372b47628 Mon Sep 17 00:00:00 2001 From: "Ronald G. Minnich" Date: Fri, 7 Apr 2006 16:55:20 +0000 Subject: add support for GLIUInit() git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2245 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/northbridge/amd/gx2/northbridgeinit.c | 271 +++++++++++++++++++++++++++--- 1 file changed, 249 insertions(+), 22 deletions(-) (limited to 'src/northbridge/amd') diff --git a/src/northbridge/amd/gx2/northbridgeinit.c b/src/northbridge/amd/gx2/northbridgeinit.c index b358812881..5c0a1985b8 100644 --- a/src/northbridge/amd/gx2/northbridgeinit.c +++ b/src/northbridge/amd/gx2/northbridgeinit.c @@ -45,6 +45,14 @@ struct gliutable gliu1table[] = { {.desc_name=GL_END,.desc_type= GL_END,.hi= 0x0,.lo= 0x0}, }; + + + + + + +struct gliutable *gliutables[] = {gliu0table, gliu1table, 0}; + struct msrinit { unsigned long msrnum; msr_t msr;}; @@ -99,34 +107,200 @@ struct msrinit GeodeLinkPriorityTable [] = { {0x0FFFFFFFF, {0x0FFFFFFFF, 0x0FFFFFFFF}}, /* END*/ }; +/* do we have dmi or not? assume yes */ +int havedmi = 1; - /* ***************************************************************************/ - /* **/ - /* * northBridgeInit*/ - /* **/ - /* * Core Logic initialization: Host bridge*/ - /* **/ - /* * Entry:*/ - /* * Exit:*/ - /* * Modified:*/ - /* **/ - /* ***************************************************************************/ +static void +writeglmsr(struct gliutable *gl){ + msr_t msr; -static void ClockGatingInit (void); -static void GLPCIInit(void); -void -northbridgeinit(void){ - printk_debug("Enter %s\n", __FUNCTION__); -// post(POST_NORTHB_INIT); - GLPCIInit(); - ClockGatingInit(); - __asm__("FINIT\n"); - /* CPUBugsFix -- called elsewhere */ - printk_debug("Exit %s\n", __FUNCTION__); + msr.lo = gl->lo; + msr.hi = gl->hi; + wrmsr(gl->desc_name, msr); + printk_debug("%s: write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo); + /* they do this, so we do this */ + msr = rdmsr(gl->desc_name); + printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo); +} + +static void +ShadowInit(struct gliutable *gl) { + msr_t msr; + + msr = rdmsr(gl->desc_name); + + if (msr.lo == 0) { + writeglmsr(gl); + } +} + +/* NOTE: transcribed from assembly code. There is the usual redundant assembly nonsense in here. + * CLEAN ME UP + */ +/* yes, this duplicates later code, but it seems that is how they want it done. + */ +extern int sizeram(void); +static void +SysmemInit(struct gliutable *gl) { + + + msr_t msr; + int sizembytes, sizebytes; + + sizembytes = sizeram(); + printk_debug("%s: enable for %dm bytes\n", __FUNCTION__, sizembytes); + sizebytes = sizembytes << 20; + + sizebytes -= SMM_SIZE*1024 +1; + + if (havedmi) + sizebytes -= DMM_SIZE * 1024 + 1; + + sizebytes -= 1; + msr.hi = gl->hi | (sizebytes >> 24); + /* set up sizebytes to fit into msr.lo */ + sizebytes <<= 8; /* what? well, we want bits 23:12 in bytes 31:20. */ + sizebytes &= 0xfff00000; + sizebytes |= 0x100; + msr.lo = sizebytes; + wrmsr(gl->desc_name, msr); + msr = rdmsr(gl->desc_name); + printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, + gl->desc_name, msr.hi, msr.lo); + +} +static void +DMMGL0Init(struct gliutable *gl) { + msr_t msr; + int sizebytes = sizeram()<<20; + long offset; + + if (! havedmi) + return; + + printk_debug("%s: %d bytes\n", __FUNCTION__, sizebytes); + + sizebytes -= DMM_SIZE*1024; + offset = sizebytes - DMM_OFFSET; + printk_debug("%s: offset is 0x%x\n", __FUNCTION__, offset); + offset >>= 12; + msr.hi = (gl->hi) | (offset << 8); + /* I don't think this is needed */ + msr.hi &= 0xffffff00; + msr.hi |= (DMM_OFFSET >> 24); + msr.lo = DMM_OFFSET << 8; + msr.lo |= ((~(DMM_SIZE*1024)+1)>>12)&0xfffff; + + wrmsr(gl->desc_name, msr); + msr = rdmsr(gl->desc_name); + printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo); + +} +static void +DMMGL1Init(struct gliutable *gl) { + msr_t msr; + + if (! havedmi) + return; + + printk_debug("%s:\n", __FUNCTION__ ); + + msr.hi = gl->hi; + /* I don't think this is needed */ + msr.hi &= 0xffffff00; + msr.hi |= (DMM_OFFSET >> 24); + msr.lo = DMM_OFFSET << 8; + /* hmm. AMD source has SMM here ... SMM, not DMM? We think DMM */ + printk_err("%s: warning, using DMM_SIZE even though AMD used SMM_SIZE\n", __FUNCTION__); + msr.lo |= ((~(DMM_SIZE*1024)+1)>>12)&0xfffff; + + wrmsr(gl->desc_name, msr); + msr = rdmsr(gl->desc_name); + printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo); +} +static void +SMMGL0Init(struct gliutable *gl) { + msr_t msr; + int sizebytes = sizeram()<<20; + long offset; + + sizebytes -= SMM_SIZE*1024; + + if (havedmi) + sizebytes -= DMM_SIZE * 1024; + + printk_debug("%s: %d bytes\n", __FUNCTION__, sizebytes); + + offset = sizebytes - SMM_OFFSET; + printk_debug("%s: offset is 0x%x\n", __FUNCTION__, offset); + offset >>= 12; + + msr.hi = offset << 8; + msr.hi |= SMM_OFFSET>>24; + + msr.lo = SMM_OFFSET << 8; + msr.lo |= ((~(SMM_SIZE*1024)+1)>>12)&0xfffff; + + wrmsr(gl->desc_name, msr); + msr = rdmsr(gl->desc_name); + printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo); +} +static void +SMMGL1Init(struct gliutable *gl) { + msr_t msr; + printk_debug("%s:\n", __FUNCTION__ ); + + msr.hi = gl->hi; + /* I don't think this is needed */ + msr.hi &= 0xffffff00; + msr.hi |= (SMM_OFFSET >> 24); + msr.lo = SMM_OFFSET << 8; + msr.lo |= ((~(SMM_SIZE*1024)+1)>>12)&0xfffff; + + wrmsr(gl->desc_name, msr); + msr = rdmsr(gl->desc_name); + printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo); } +static void +GLIUInit(struct gliutable *gl){ + while (gl->desc_type != GL_END){ + switch(gl->desc_type){ + default: + printk_err("%s: name %x, type %x, hi %x, lo %x: unsupported type: ", __FUNCTION__, + gl->desc_name, gl->desc_type, gl->hi, gl->hi); + printk_err("Must be %x, %x, %x, %x, %x, or %x\n", SC_SHADOW,R_SYSMEM,BMO_DMM, + BM_DMM, BMO_SMM,BM_SMM); + + case SC_SHADOW: /* Check for a Shadow entry*/ + ShadowInit(gl); + break; + + case R_SYSMEM: /* check for a SYSMEM entry*/ + SysmemInit(gl); + break; + + case BMO_DMM: /* check for a DMM entry*/ + DMMGL0Init(gl); + break; + + case BM_DMM : /* check for a DMM entry*/ + DMMGL1Init(gl); + break; + + case BMO_SMM : /* check for a SMM entry*/ + SMMGL0Init(gl); + break; + + case BM_SMM : /* check for a SMM entry*/ + SMMGL1Init(gl); + break; + } + gl++; + } +} /* ***************************************************************************/ /* **/ /* * GLPCIInit*/ @@ -344,3 +518,56 @@ performance: } } + +static void +GeodeLinkPriority(void){ + msr_t msr; + struct msrinit *prio = GeodeLinkPriorityTable; + int i; + + for(i = 0; prio->msrnum != 0xffffffff; i++) { + msr = rdmsr(prio->msrnum); + printk_debug("%s: MSR 0x%x is 0x%x:0x%x\n", __FUNCTION__, prio->msrnum, msr.hi, msr.lo); + msr.hi |= prio->msr.hi; + msr.lo &= ~0xfff; + msr.lo |= prio->msr.lo; + printk_debug("%s: MSR 0x%x will be set to 0x%x:0x%x\n", __FUNCTION__, + prio->msrnum, msr.hi, msr.lo); + wrmsr(prio->msrnum, msr); + } +} + + /* ***************************************************************************/ + /* **/ + /* * northBridgeInit*/ + /* **/ + /* * Core Logic initialization: Host bridge*/ + /* **/ + /* * Entry:*/ + /* * Exit:*/ + /* * Modified:*/ + /* **/ + /* ***************************************************************************/ + +void +northbridgeinit(void){ + int i; + printk_debug("Enter %s\n", __FUNCTION__); +// post(POST_NORTHB_INIT); + for(i = 0; gliutables[i]; i++) + GLIUInit(gliutables[i]); + + GeodeLinkPriority(); + + + /* Now that the descriptor to memory is set up.*/ + /* The memory controller needs one read to synch it's lines before it can be used.*/ + i = *(int *) 0; + + GLPCIInit(); + ClockGatingInit(); + __asm__("FINIT\n"); + /* CPUBugsFix -- called elsewhere */ + printk_debug("Exit %s\n", __FUNCTION__); +} + -- cgit v1.2.3