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Diffstat (limited to 'src/cpu/amd/model_lx/cpubug.c')
-rw-r--r--src/cpu/amd/model_lx/cpubug.c336
1 files changed, 6 insertions, 330 deletions
diff --git a/src/cpu/amd/model_lx/cpubug.c b/src/cpu/amd/model_lx/cpubug.c
index af5a3f03bc..ce81929b18 100644
--- a/src/cpu/amd/model_lx/cpubug.c
+++ b/src/cpu/amd/model_lx/cpubug.c
@@ -24,34 +24,12 @@
#include <arch/io.h>
#include <stdint.h>
#include <device/device.h>
-#include <device/pci.h>
-#include <device/pci_ids.h>
#include <stdlib.h>
#include <string.h>
#include <bitops.h>
-#include <cpu/amd/lxdef.h>
#include <cpu/x86/msr.h>
-#include <cpu/x86/cache.h>
-
-
-#if 0
-void
-bug645(void){
- msr_t msr;
- rdmsr(CPU_ID_CONFIG);
- msr.whatever |= ID_CONFIG_SERIAL_SET;
- wrmsr(msr);
-}
-
-void
-bug573(void){
- msr_t msr;
+#include <cpu/amd/lxdef.h>
- msr = rdmsr(MC_GLD_MSR_PM);
- msr.eax &= 0xfff3;
- wrmsr(MC_GLD_MSR_PM);
-}
-#endif
/**************************************************************************
*
@@ -61,14 +39,8 @@ bug573(void){
* PCI cache deadlock
* There is also fix code in cache and PCI functions. This bug is very is pervasive.
*
- * Entry:
- * Exit:
- * Modified:
- *
**************************************************************************/
-static void
-pcideadlock(void)
-{
+static void pcideadlock(void){
msr_t msr;
/*
@@ -77,18 +49,9 @@ pcideadlock(void)
* for PCI writes to complete.
*/
msr = rdmsr(CPU_DM_CONFIG0);
- msr.hi &= ~(7<<DM_CONFIG0_UPPER_WSREQ_SHIFT);
- msr.hi |= (2<<DM_CONFIG0_UPPER_WSREQ_SHIFT);
msr.lo |= DM_CONFIG0_LOWER_MISSER_SET;
wrmsr(CPU_DM_CONFIG0, msr);
- /* interlock instruction fetches to WS regions with data accesses.
- * This prevents an instruction fetch from going out to PCI if the
- * data side is about to make a request.
- */
- msr = rdmsr(CPU_IM_CONFIG);
- msr.lo |= IM_CONFIG_LOWER_QWT_SET;
- wrmsr(CPU_IM_CONFIG, msr);
/* write serialize memory hole to PCI. Need to unWS when something is
* shadowed regardless of cachablility.
@@ -100,249 +63,6 @@ pcideadlock(void)
wrmsr( CPU_RCONF_E0_FF, msr);
}
-/****************************************************************************
- *
- * CPUbug784
- *
- * Bugtool #784 + #792
- *
- * Fix CPUID instructions for < 3.0 CPUs
- *
- * Entry:
- * Exit:
- * Modified:
- *
- ****************************************************************************/
-
-void bug784(void)
-{
- msr_t msr;
- //static char *name = "Geode by NSC";
-
- /* we'll do this the stupid way, for now, but that's the string they want. NO ONE KNOWS why you
- * would do this -- the OS can figure this type of stuff out!
- */
- msr = rdmsr(0x3006);
- msr.hi = 0x646f6547;
- wrmsr(0x3006, msr);
-
- msr = rdmsr(0x3007);
- msr.hi = 0x79622065;
- msr.lo = 0x43534e20;
- wrmsr(0x3007, msr);
-
- msr = rdmsr(0x3002);
- wrmsr(0x3008, msr);
-
- /* More CPUID to match AMD better. #792*/
- msr = rdmsr(0x3009);
- msr.hi = 0x0C0C0A13D;
- msr.lo = 0x00000000;
- wrmsr(0x3009, msr);
-}
-
-/* cpubug 1398: enable MC if we KNOW we have DDR*/
-/**************************************************************************
- *
- * CPUbugIAENG1398
- *
- * ClearQuest #IAENG1398
- * The MC can not be enabled with SDR memory but can for DDR. Enable for
- * DDR here if the setup token is "Default"
- * Add this back to core by default once 2.0 CPUs are not supported.
- * Entry:
- * Exit:
- * Modified:
- *
- **************************************************************************/
-void eng1398(void)
-{
- msr_t msr;
-
- msr = rdmsr(MSR_GLCP+0x17);
- if ((msr.lo & 0xff) <= CPU_REV_2_0) {
- msr = rdmsr(GLCP_SYS_RSTPLL);
- if (msr.lo & (1<<RSTPPL_LOWER_SDRMODE_SHIFT))
- return;
- }
-
- /* no CMOS/NVRAM to check, so enable MC Clock Gating */
- msr = rdmsr(MC_GLD_MSR_PM);
- msr.lo |= 3; /* enable MC clock gating.*/
- wrmsr(MC_GLD_MSR_PM, msr);
-}
-
-/***************************************************************************
- *
- * CPUbugIAENG2900
- *
- * Clear Quest IAENG00002900, VSS 118.150
- *
- * BTB issue causes blue screen in windows, but the fix is required
- * for all operating systems.
- *
- * Entry:
- * Exit:
- * Modified:
- *
- **************************************************************************/
-void
-eng2900(void)
-{
- msr_t msr;
-
- printk_debug("CPU_BUG:%s\n", __FUNCTION__);
- /* Clear bit 43, disables the sysenter/sysexit in CPUID3 */
- msr = rdmsr(0x3003);
- msr.hi &= 0xFFFFF7FF;
- wrmsr(0x3003, msr);
-
- /* change this value to zero if you need to disable this BTB SWAPSiF. */
- if (1) {
-
- /* Disable enable_actions in DIAGCTL while setting up GLCP */
- msr.hi = 0;
- msr.lo = 0;
- wrmsr(MSR_GLCP + 0x005f, msr);
-
- /* Changing DBGCLKCTL register to GeodeLink */
- msr.hi = 0;
- msr.lo = 0;
- wrmsr(MSR_GLCP + 0x0016, msr);
-
- msr.hi = 0;
- msr.lo = 2;
- wrmsr(MSR_GLCP + 0x0016, msr);
-
- /* The code below sets up the CPU to stall for 4 GeodeLink
- * clocks when CPU is snooped. Because setting XSTATE to 0
- * overrides any other XSTATE action, the code will always
- * stall for 4 GeodeLink clocks after a snoop request goes
- * away even if it occured a clock or two later than a
- * different snoop; the stall signal will never 'glitch high'
- * for only one or two CPU clocks with this code.
- */
-
- /* Send mb0 port 3 requests to upper GeodeLink diag bits
- [63:32] */
- msr.hi = 0;
- msr.lo = 0x80338041;
- wrmsr(MSR_GLIU0 + 0x2005, msr);
-
- /* set5m watches request ready from mb0 to CPU (snoop) */
- msr.hi = 0x5ad68000;
- msr.lo = 0;
- wrmsr(MSR_GLCP + 0x0045, msr);
-
- /* SET4M will be high when state is idle (XSTATE=11) */
- msr.hi = 0;
- msr.lo = 0x0140;
- wrmsr(MSR_GLCP + 0x0044, msr);
-
- /* SET5n to watch for processor stalled state */
- msr.hi = 0x2000;
- msr.lo = 0;
- wrmsr(MSR_GLCP + 0x004D, msr);
-
- /* Writing action number 13: XSTATE=0 to occur when CPU is
- snooped unless we're stalled */
- msr.hi = 0;
- msr.lo = 0x00400000;
- wrmsr(MSR_GLCP + 0x0075, msr);
-
- /* Writing action number 11: inc XSTATE every GeodeLink clock
- unless we're idle */
- msr.hi = 0;
- msr.lo = 0x30000;
- wrmsr(MSR_GLCP + 0x0073, msr);
-
- /* Writing action number 5: STALL_CPU_PIPE when exitting idle
- state or not in idle state */
- msr.hi = 0;
- msr.lo = 0x00430000;
- wrmsr(MSR_GLCP + 0x006D, msr);
-
- /* Writing DIAGCTL Register to enable the stall action and to
- let set5m watch the upper GeodeLink diag bits. */
- msr.hi = 0;
- msr.lo = 0x80004000;
- wrmsr(MSR_GLCP + 0x005f, msr);
- }
-}
-
-void bug118253(void)
-{
- /* GLPCI PIO Post Control shouldn't be enabled */
- msr_t msr;
-
- msr = rdmsr(GLPCI_SPARE);
- msr.lo &= ~GLPCI_SPARE_LOWER_PPC_SET;
- wrmsr(GLPCI_SPARE, msr);
-}
-
-void bug118339(void)
-{
- /* per AMD, do this always */
- msr_t msr = {0,0};
- int msrnum;
-
- /* Disable enable_actions in DIAGCTL while setting up GLCP */
- wrmsr(MSR_GLCP + 0x005f, msr);
-
- /* SET2M fires if VG pri is odd (3, not 2) and Ystate=0 */
- msrnum = MSR_GLCP + 0x042;
- /* msr.hi = 2d6b8000h */;
- msr.hi = 0x596b8000;
- msr.lo = 0x00000a00;
- wrmsr(msrnum, msr);
-
- /* SET3M fires if MBUS changed and VG pri is odd */
- msrnum = MSR_GLCP + 0x043;
- msr.hi = 0x596b8040;
- msr.lo = 0;
- wrmsr(msrnum, msr);
-
- /* Put VG request data on lower diag bus */
- msrnum = MSR_GLIU0 + 0x2005;
- msr.hi = 0;
- msr.lo = 0x80338041;
- wrmsr(msrnum, msr);
-
- /* Increment Y state if SET3M if true */
- msrnum = MSR_GLCP + 0x074;
- msr.hi = 0;
- msr.lo = 0x0000c000;
- wrmsr(msrnum, msr);
-
- /* Set up MBUS action to PRI=3 read of MBIU */
- msrnum = MSR_GLCP + 0x020;
- msr.hi = 0x0000d863;
- msr.lo = 0x20002000;
- wrmsr(msrnum, msr);
-
- /* Trigger MBUS action if VG=pri3 and Y=0, this blocks most PCI */
- msrnum = MSR_GLCP + 0x071;
- msr.hi = 0;
- msr.lo = 0x00000c00;
- wrmsr(msrnum, msr);
-
- /* Writing DIAGCTL */
- msrnum = MSR_GLCP + 0x005f;
- msr.hi = 0;
- msr.lo = 0x80004000;
- wrmsr(msrnum, msr);
-
- /* Code to enable FS2 even when BTB and VGTEAR SWAPSiFs are enabled */
- /* As per Todd Roberts in PBz1094 and PBz1095 */
- /* Moved from CPUREG to CPUBUG per Tom Sylla */
- msrnum = 0x04C000042; /* GLCP SETMCTL Register */;
- msr = rdmsr(msrnum);
- msr.hi |= 8; /* Bit 35 = MCP_IN */
- wrmsr(msrnum, msr);
-}
-
-
-
/****************************************************************************/
/***/
/** DisableMemoryReorder*/
@@ -353,62 +73,18 @@ void bug118339(void)
/** This is safe to do here and not in MC init since there is nothing*/
/** to maintain coherency with and the cache is not enabled yet.*/
/***/
-/***/
-/** Entry:*/
-/** Exit:*/
-/** Modified:*/
-/***/
/****************************************************************************/
-void disablememoryreadorder(void)
-{
+static void disablememoryreadorder(void){
msr_t msr;
- msr = rdmsr(MC_CF8F_DATA);
+ msr = rdmsr(MC_CF8F_DATA);
msr.hi |= CF8F_UPPER_REORDER_DIS_SET;
wrmsr(MC_CF8F_DATA, msr);
}
-void
-cpubug(void)
-{
-#if 0 //GX3: any CPU bugs to fix here? :)
- msr_t msr;
- int rev;
-
- msr = rdmsr(GLCP_CHIP_REVID);
-
- rev = msr.lo & 0xff;
- if (rev < 0x20) {
- printk_err("%s: rev < 0x20! bailing!\n");
- return;
- }
- printk_debug("Doing cpubug fixes for rev 0x%x\n", rev);
- switch(rev)
- {
- case 0x20:
+/* For cpu version C3. Should be the only released version */
+void cpubug(void) {
pcideadlock();
- eng1398();
- /* cs 5530 bug; ignore
- bug752();
- */
- break;
- case 0x21:
- pcideadlock();
- eng1398();
- eng2900();
- bug118339();
- break;
- case 0x22:
- case 0x30:
- break;
- default:
- printk_err("unknown rev %x, bailing\n", rev);
- return;
- }
- bug784();
- bug118253();
disablememoryreadorder();
printk_debug("Done cpubug fixes \n");
-#endif
-
}
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