diff options
author | Martin Roth <gaumless@gmail.com> | 2017-10-15 14:16:37 -0600 |
---|---|---|
committer | Martin Roth <martinroth@google.com> | 2018-01-15 23:22:59 +0000 |
commit | 99c45dee0ae62254be36a312d67764784450b564 (patch) | |
tree | 193b20bb742056464374373ba65b07bc901f07c7 /src/cpu/amd/geode_gx2/cpubug.c | |
parent | b94b2c73068eba434cdd162fac1d50cf22524259 (diff) | |
download | coreboot-99c45dee0ae62254be36a312d67764784450b564.tar.xz |
AMD GX2 boards & chips: Remove - using LATE_CBMEM_INIT
All boards and chips that are still using LATE_CBMEM_INIT are being
removed as previously discussed.
If these boards and chips are updated to not use LATE_CBMEM_INIT, they
can be restored to the active codebase from the 4.7 branch.
chips:
cpu/amd/geode_gx2
northbridge/amd/gx2
southbridge/amd/cs5535
Mainboards:
mainboard/amd/rumba
mainboard/lippert/frontrunner
mainboard/wyse/s50
Change-Id: I81c130f53bbfa001edbfdb7a878ef115757f620c
Signed-off-by: Martin Roth <gaumless@gmail.com>
Reviewed-on: https://review.coreboot.org/22025
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Diffstat (limited to 'src/cpu/amd/geode_gx2/cpubug.c')
-rw-r--r-- | src/cpu/amd/geode_gx2/cpubug.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/src/cpu/amd/geode_gx2/cpubug.c b/src/cpu/amd/geode_gx2/cpubug.c deleted file mode 100644 index cf2b79d8be..0000000000 --- a/src/cpu/amd/geode_gx2/cpubug.c +++ /dev/null @@ -1,359 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <console/console.h> -#include <arch/io.h> -#include <stdint.h> -#include <device/device.h> -#include <stdlib.h> -#include <string.h> -#include <cpu/amd/gx2def.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; - msr = rdmsr(MC_GLD_MSR_PM); - msr.eax &= 0xfff3; - wrmsr(MC_GLD_MSR_PM); -} -#endif - -/* pcideadlock - * - * Bugtool #465 and #609 - * PCI cache deadlock - * There is also fix code in cache and PCI functions. This bug is very is pervasive. - */ -static void pcideadlock(void) -{ - msr_t msr; - - /* forces serialization of all load misses. Setting this bit prevents the - * DM pipe from backing up if a read request has to be held up waiting - * 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. - */ - msr.lo = 0x021212121; - msr.hi = 0x021212121; - wrmsr( CPU_RCONF_A0_BF, msr); - wrmsr( CPU_RCONF_C0_DF, msr); - wrmsr( CPU_RCONF_E0_FF, msr); -} - -/* CPUbug784 - * - * Bugtool #784 + #792 - * - * Fix CPUID instructions for < 3.0 CPUs - */ -static 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. - */ -static 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. - */ -static void eng2900(void) -{ - msr_t msr; - - printk(BIOS_DEBUG, "CPU_BUG:%s\n", __func__); - /* 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 occurred 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 exiting 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); - } -} - -static 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); -} - -static 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 - * - * PBZ 3659: - * The MC reordered transactions incorrectly and breaks coherency. - * Disable reordering and take a potential performance hit. - * 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. - */ -static void disablememoryreadorder(void) -{ - msr_t msr; - - msr = rdmsr(MC_CF8F_DATA); - msr.hi |= CF8F_UPPER_REORDER_DIS_SET; - wrmsr(MC_CF8F_DATA, msr); -} - -void cpubug(void) -{ - msr_t msr; - int rev; - - msr = rdmsr(GLCP_CHIP_REVID); - - rev = msr.lo & 0xff; - if (rev < 0x20) { - printk(BIOS_ERR, "%s: rev < 0x20! bailing!\n", __func__); - return; - } - printk(BIOS_DEBUG, "Doing cpubug fixes for rev 0x%x\n", rev); - switch(rev) - { - case 0x20: - pcideadlock(); - eng1398(); - /* cs 5530 bug; ignore - bug752(); - */ - break; - case 0x21: - pcideadlock(); - eng1398(); - eng2900(); - bug118339(); - break; - case 0x22: - case 0x30: - break; - default: - printk(BIOS_ERR, "unknown rev %x, bailing\n", rev); - return; - } - bug784(); - bug118253(); - disablememoryreadorder(); - printk(BIOS_DEBUG, "Done cpubug fixes\n"); -} |