I'm trying to port coreboot to HP EliteDesk 800 G1 DM，using master branch with commit hash 70fea013c7ebd6d85a7806748233fcfd76802f5f，and mrc.bin from Chromebook peppy.
Then I get the following boot log by EHCI debug serial，it hang in cbmem_top_init_once. Adding debug print shows cbmem_top points to 7f800000. LPC debug card also stop on 0x3b.
I have no idea how to debug. Any help would be appreciated.
@@ -55,8 +55,11 @@ static void cbmem_top_init_once(void) return;
/* The test is only effective on X86 and when address hits UC memory. */ - if (ENV_X86) - quick_ram_check_or_die((uintptr_t)cbmem_top() - sizeof(u32)); + if (ENV_X86) { + uintptr_t cbmem_top_p = (uintptr_t)cbmem_top(); + printk(BIOS_DEBUG, "CBMEM top: %08lx ", cbmem_top_p); + quick_ram_check_or_die(cbmem_top_p - sizeof(u32)); + } }
coreboot-4.12-2693-g0c1e8f44ec-dirty Sat Sep 12 11:15:18 UTC 2020 bootblock starting (log level: 8)... FMAP: area COREBOOT found @ e30200 (1900032 bytes) CBFS: Locating 'fallback/romstage' CBFS: Found @ offset 80 size 1827c BS: bootblock times (exec / console): total (unknown) / 8 ms
coreboot-4.12-2693-g0c1e8f44ec-dirty Sat Sep 12 11:15:18 UTC 2020 romstage starting (log level: 8)... Disabling Watchdog reboot... done. SMBus controller enabled Setting up static northbridge registers... done. Started PEG10 link training. Temporarily hiding PEG10. Initializing IGD... Back from haswell_early_initialization() POST: 0x3a CPU id(306c3) ucode:00000028 Intel(R) Pentium(R) CPU G3240 @ 3.10GHz AES NOT supported, TXT NOT supported, VT supported PCH type: Q87, device id: 8c4e, rev id 5 Starting UEFI PEI System Agent FMAP: area RW_MRC_CACHE found @ e20000 (65536 bytes) MRC: no data in 'RW_MRC_CACHE' FMAP: area COREBOOT found @ e30200 (1900032 bytes) CBFS: Locating 'mrc.bin' CBFS: Found @ offset 16fdc0 size 2e6e4 System Agent: Starting up... System Agent: Initializing PCH install_ppi: overwrite GUID {ed097352-9041-445a-80b6-b29d509e8845} install_ppi: overwrite GUID {908c7f8b-5c48-47fb-8357-f5fd4e235276} System Agent: Initializing PCH (SMBUS) System Agent: Initializing PCH (USUSB System Agent Version 1.6.1 Build 2 memcfg DDR3 clock 1333 MHz memcfg channel assignment: A: 1, B 0, C 2 memcfg channel[0] config (00600000): ECC inactive enhanced interleave mode on rank interleave on DIMMA 0 MB width x8 or x32 single rank, selected DIMMB 0 MB width x8 or x32 single rank memcfg channel[1] config (00600010): ECC inactive enhanced interleave mode on rank interleave on DIMMA 4096 MB width x8 or x32 single rank, selected DIMMB 0 MB width x8 or x32 single rank POST: 0x3b ME: FW Partition Table : OK ME: Bringup Loader Failure : NO ME: Firmware Init Complete : NO ME: Manufacturing Mode : YES ME: Boot Options Present : NO ME: Update In Progress : NO ME: Current Working State : Initializing ME: Current Operation State : Bring up ME: Current Operation Mode : Debug ME: Error Code : No Error ME: Progress Phase : BUP Phase ME: Power Management Event : Pseudo-global reset ME: Progress Phase State : 0x4d CBMEM top: 7f800000