add support for GLIUInit()
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2245 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Ronald G. Minnich
parent
40fedaf6a9
commit
4223188335
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@ -45,6 +45,14 @@ struct gliutable gliu1table[] = {
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{.desc_name=GL_END,.desc_type= GL_END,.hi= 0x0,.lo= 0x0},
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};
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struct gliutable *gliutables[] = {gliu0table, gliu1table, 0};
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struct msrinit {
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unsigned long msrnum;
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msr_t msr;};
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@ -99,34 +107,200 @@ struct msrinit GeodeLinkPriorityTable [] = {
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{0x0FFFFFFFF, {0x0FFFFFFFF, 0x0FFFFFFFF}}, /* END*/
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};
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/* do we have dmi or not? assume yes */
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int havedmi = 1;
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/* ***************************************************************************/
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/* **/
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/* * northBridgeInit*/
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/* **/
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/* * Core Logic initialization: Host bridge*/
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/* **/
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/* * Entry:*/
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/* * Exit:*/
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/* * Modified:*/
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/* **/
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/* ***************************************************************************/
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static void
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writeglmsr(struct gliutable *gl){
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msr_t msr;
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static void ClockGatingInit (void);
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static void GLPCIInit(void);
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void
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northbridgeinit(void){
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printk_debug("Enter %s\n", __FUNCTION__);
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// post(POST_NORTHB_INIT);
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GLPCIInit();
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ClockGatingInit();
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__asm__("FINIT\n");
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/* CPUBugsFix -- called elsewhere */
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printk_debug("Exit %s\n", __FUNCTION__);
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msr.lo = gl->lo;
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msr.hi = gl->hi;
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wrmsr(gl->desc_name, msr);
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printk_debug("%s: write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo);
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/* they do this, so we do this */
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msr = rdmsr(gl->desc_name);
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printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo);
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}
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static void
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ShadowInit(struct gliutable *gl) {
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msr_t msr;
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msr = rdmsr(gl->desc_name);
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if (msr.lo == 0) {
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writeglmsr(gl);
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}
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}
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/* NOTE: transcribed from assembly code. There is the usual redundant assembly nonsense in here.
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* CLEAN ME UP
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*/
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/* yes, this duplicates later code, but it seems that is how they want it done.
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*/
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extern int sizeram(void);
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static void
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SysmemInit(struct gliutable *gl) {
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msr_t msr;
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int sizembytes, sizebytes;
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sizembytes = sizeram();
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printk_debug("%s: enable for %dm bytes\n", __FUNCTION__, sizembytes);
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sizebytes = sizembytes << 20;
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sizebytes -= SMM_SIZE*1024 +1;
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if (havedmi)
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sizebytes -= DMM_SIZE * 1024 + 1;
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sizebytes -= 1;
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msr.hi = gl->hi | (sizebytes >> 24);
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/* set up sizebytes to fit into msr.lo */
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sizebytes <<= 8; /* what? well, we want bits 23:12 in bytes 31:20. */
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sizebytes &= 0xfff00000;
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sizebytes |= 0x100;
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msr.lo = sizebytes;
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wrmsr(gl->desc_name, msr);
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msr = rdmsr(gl->desc_name);
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printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__,
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gl->desc_name, msr.hi, msr.lo);
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}
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static void
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DMMGL0Init(struct gliutable *gl) {
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msr_t msr;
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int sizebytes = sizeram()<<20;
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long offset;
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if (! havedmi)
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return;
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printk_debug("%s: %d bytes\n", __FUNCTION__, sizebytes);
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sizebytes -= DMM_SIZE*1024;
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offset = sizebytes - DMM_OFFSET;
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printk_debug("%s: offset is 0x%x\n", __FUNCTION__, offset);
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offset >>= 12;
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msr.hi = (gl->hi) | (offset << 8);
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/* I don't think this is needed */
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msr.hi &= 0xffffff00;
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msr.hi |= (DMM_OFFSET >> 24);
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msr.lo = DMM_OFFSET << 8;
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msr.lo |= ((~(DMM_SIZE*1024)+1)>>12)&0xfffff;
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wrmsr(gl->desc_name, msr);
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msr = rdmsr(gl->desc_name);
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printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo);
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}
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static void
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DMMGL1Init(struct gliutable *gl) {
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msr_t msr;
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if (! havedmi)
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return;
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printk_debug("%s:\n", __FUNCTION__ );
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msr.hi = gl->hi;
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/* I don't think this is needed */
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msr.hi &= 0xffffff00;
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msr.hi |= (DMM_OFFSET >> 24);
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msr.lo = DMM_OFFSET << 8;
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/* hmm. AMD source has SMM here ... SMM, not DMM? We think DMM */
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printk_err("%s: warning, using DMM_SIZE even though AMD used SMM_SIZE\n", __FUNCTION__);
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msr.lo |= ((~(DMM_SIZE*1024)+1)>>12)&0xfffff;
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wrmsr(gl->desc_name, msr);
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msr = rdmsr(gl->desc_name);
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printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo);
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}
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static void
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SMMGL0Init(struct gliutable *gl) {
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msr_t msr;
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int sizebytes = sizeram()<<20;
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long offset;
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sizebytes -= SMM_SIZE*1024;
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if (havedmi)
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sizebytes -= DMM_SIZE * 1024;
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printk_debug("%s: %d bytes\n", __FUNCTION__, sizebytes);
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offset = sizebytes - SMM_OFFSET;
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printk_debug("%s: offset is 0x%x\n", __FUNCTION__, offset);
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offset >>= 12;
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msr.hi = offset << 8;
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msr.hi |= SMM_OFFSET>>24;
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msr.lo = SMM_OFFSET << 8;
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msr.lo |= ((~(SMM_SIZE*1024)+1)>>12)&0xfffff;
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wrmsr(gl->desc_name, msr);
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msr = rdmsr(gl->desc_name);
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printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo);
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}
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static void
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SMMGL1Init(struct gliutable *gl) {
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msr_t msr;
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printk_debug("%s:\n", __FUNCTION__ );
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msr.hi = gl->hi;
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/* I don't think this is needed */
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msr.hi &= 0xffffff00;
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msr.hi |= (SMM_OFFSET >> 24);
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msr.lo = SMM_OFFSET << 8;
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msr.lo |= ((~(SMM_SIZE*1024)+1)>>12)&0xfffff;
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wrmsr(gl->desc_name, msr);
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msr = rdmsr(gl->desc_name);
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printk_debug("%s: AFTER write msr 0x%x, val 0x%x:0x%x\n", __FUNCTION__, gl->desc_name, msr.hi, msr.lo);
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}
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static void
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GLIUInit(struct gliutable *gl){
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while (gl->desc_type != GL_END){
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switch(gl->desc_type){
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default:
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printk_err("%s: name %x, type %x, hi %x, lo %x: unsupported type: ", __FUNCTION__,
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gl->desc_name, gl->desc_type, gl->hi, gl->hi);
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printk_err("Must be %x, %x, %x, %x, %x, or %x\n", SC_SHADOW,R_SYSMEM,BMO_DMM,
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BM_DMM, BMO_SMM,BM_SMM);
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case SC_SHADOW: /* Check for a Shadow entry*/
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ShadowInit(gl);
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break;
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case R_SYSMEM: /* check for a SYSMEM entry*/
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SysmemInit(gl);
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break;
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case BMO_DMM: /* check for a DMM entry*/
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DMMGL0Init(gl);
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break;
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case BM_DMM : /* check for a DMM entry*/
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DMMGL1Init(gl);
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break;
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case BMO_SMM : /* check for a SMM entry*/
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SMMGL0Init(gl);
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break;
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case BM_SMM : /* check for a SMM entry*/
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SMMGL1Init(gl);
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break;
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}
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gl++;
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}
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}
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/* ***************************************************************************/
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/* **/
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/* * GLPCIInit*/
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@ -344,3 +518,56 @@ performance:
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}
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}
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static void
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GeodeLinkPriority(void){
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msr_t msr;
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struct msrinit *prio = GeodeLinkPriorityTable;
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int i;
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for(i = 0; prio->msrnum != 0xffffffff; i++) {
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msr = rdmsr(prio->msrnum);
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printk_debug("%s: MSR 0x%x is 0x%x:0x%x\n", __FUNCTION__, prio->msrnum, msr.hi, msr.lo);
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msr.hi |= prio->msr.hi;
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msr.lo &= ~0xfff;
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msr.lo |= prio->msr.lo;
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printk_debug("%s: MSR 0x%x will be set to 0x%x:0x%x\n", __FUNCTION__,
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prio->msrnum, msr.hi, msr.lo);
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wrmsr(prio->msrnum, msr);
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}
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}
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/* ***************************************************************************/
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/* **/
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/* * northBridgeInit*/
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/* **/
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/* * Core Logic initialization: Host bridge*/
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/* **/
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/* * Entry:*/
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/* * Exit:*/
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/* * Modified:*/
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/* **/
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/* ***************************************************************************/
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void
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northbridgeinit(void){
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int i;
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printk_debug("Enter %s\n", __FUNCTION__);
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// post(POST_NORTHB_INIT);
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for(i = 0; gliutables[i]; i++)
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GLIUInit(gliutables[i]);
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GeodeLinkPriority();
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/* Now that the descriptor to memory is set up.*/
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/* The memory controller needs one read to synch it's lines before it can be used.*/
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i = *(int *) 0;
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GLPCIInit();
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ClockGatingInit();
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__asm__("FINIT\n");
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/* CPUBugsFix -- called elsewhere */
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printk_debug("Exit %s\n", __FUNCTION__);
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}
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