From 9b6b3d22a2f0a44b0fb45de68c22d21457aca42a Mon Sep 17 00:00:00 2001 From: "Ronald G. Minnich" Date: Wed, 23 Nov 2005 04:56:36 +0000 Subject: issue 25, various AMD patches Signed-off-by: Ronald G. Minnich git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2092 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/cpu/amd/microcode/microcode.c | 136 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 136 insertions(+) create mode 100644 src/cpu/amd/microcode/microcode.c (limited to 'src/cpu/amd/microcode/microcode.c') diff --git a/src/cpu/amd/microcode/microcode.c b/src/cpu/amd/microcode/microcode.c new file mode 100644 index 0000000000..c05268e845 --- /dev/null +++ b/src/cpu/amd/microcode/microcode.c @@ -0,0 +1,136 @@ +/*============================================================================ +Copyright 2005 ADVANCED MICRO DEVICES, INC. All Rights Reserved. +This software and any related documentation (the "Materials") are the +confidential proprietary information of AMD. Unless otherwise provided in a +software agreement specifically licensing the Materials, the Materials are +provided in confidence and may not be distributed, modified, or reproduced in +whole or in part by any means. +LIMITATION OF LIABILITY: THE MATERIALS ARE PROVIDED "AS IS" WITHOUT ANY +EXPRESS OR IMPLIED WARRANTY OF ANY KIND, INCLUDING BUT NOT LIMITED TO +WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT, TITLE, FITNESS FOR ANY +PARTICULAR PURPOSE, OR WARRANTIES ARISING FROM CONDUCT, COURSE OF DEALING, OR +USAGE OF TRADE. IN NO EVENT SHALL AMD OR ITS LICENSORS BE LIABLE FOR ANY +DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, +BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OF OR +INABILITY TO USE THE MATERIALS, EVEN IF AMD HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME JURISDICTIONS PROHIBIT THE EXCLUSION +OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE ABOVE +LIMITATION MAY NOT APPLY TO YOU. +AMD does not assume any responsibility for any errors which may appear in the +Materials nor any responsibility to support or update the Materials. AMD +retains the right to modify the Materials at any time, without notice, and is +not obligated to provide such modified Materials to you. +NO SUPPORT OBLIGATION: AMD is not obligated to furnish, support, or make any +further information, software, technical information, know-how, or show-how +available to you. +U.S. GOVERNMENT RESTRICTED RIGHTS: The Materials are provided with "RESTRICTED +RIGHTS." Use, duplication, or disclosure by the Government is subject to the +restrictions as set forth in FAR 52.227-14 and DFAR 252.227-7013, et seq., or +its successor. Use of the Materials by the Government constitutes +acknowledgement of AMD's proprietary rights in them. +============================================================================*/ +//@DOC +// microcode.c +/* +$1.0$ +*/ +// Description: microcode patch support for k8 +// by yhlu +// +//============================================================================ +#include +#include +#include +#include +#include +#include + +struct microcode { + uint32_t date_code; + uint32_t patch_id; + + uint16_t m_patch_data_id; + uint8_t m_patch_data_len; + uint8_t init_flag; + + uint32_t m_patch_data_cksum; + + uint32_t nb_dev_id; + uint32_t ht_io_hub_dev_id; + + uint16_t processor_rev_id; + uint8_t ht_io_hub_rev_id; + uint8_t nb_rev_id; + + uint8_t bios_api_rev; + uint8_t resv1[3]; + + uint32_t match_reg[8]; + + uint8_t m_patch_data[896]; + uint8_t resv2[896]; + + uint8_t x86_code_present; + uint8_t x86_code_entry[191]; +}; + +static int need_apply_patch(struct microcode *m, unsigned equivalent_processor_rev_id) +{ + + if (m->processor_rev_id != equivalent_processor_rev_id) return 0; + + if (m->nb_dev_id) { + //look at the device id, if not found return; + //if(m->nb_rev_id != installed_nb_rev_id) return 0; + } + + if (m->ht_io_hub_dev_id) { + //look at the device id, if not found return; + //if(m->ht_io_hub_rev_id != installed_ht_io_bub_rev_id) return 0; + } + + if (m->x86_code_present) { + //if(!x86_code_execute()) return 0; + } + + return 1; +} + + +void amd_update_microcode(void *microcode_updates, unsigned equivalent_processor_rev_id) +{ + unsigned int patch_id, new_patch_id; + struct microcode *m; + char *c; + msr_t msr; + + msr = rdmsr(0x8b); + patch_id = msr.lo; + + printk_debug("microcode: equivalent processor rev id = 0x%04x, patch id = 0x%08x\n", equivalent_processor_rev_id, patch_id); + + m = microcode_updates; + + for(c = microcode_updates; m->date_code; m = (struct microcode *)c) { + + if( need_apply_patch(m, equivalent_processor_rev_id) ) { + //apply patch + + msr.hi = 0; + msr.lo = (uint32_t)m; + + wrmsr(0xc0010020, msr); + + printk_debug("microcode: patch id that want to apply= 0x%08x\n", m->patch_id); + + //read the patch_id again + msr = rdmsr(0x8b); + new_patch_id = msr.lo; + + printk_debug("microcode: updated to patch id = 0x%08x %s\r\n", new_patch_id , (new_patch_id == m->patch_id)?" success":" fail" ); + break; + } + c += 2048; + } + +} -- cgit v1.2.3