I try to understand coreboot source for x86 (intel/kblrvp). But I have encountered some difficulties. In romstage fsp_memory_init, try to find fspm.bin. ``` if (cbfs_boot_locate(&file_desc, name, NULL)) { printk(BIOS_CRIT, "Could not locate %s in CBFS\n", name); die("FSPM not available!\n"); }
```
But my firmware not contain. ``` ➜ coreboot git:(master) build/cbfstool build/coreboot.rom print Name Offset Type Size cbfs master header 0x0 cbfs header 32 fallback/romstage 0x80 stage 36876 cpu_microcode_blob.bin 0x9100 microcode 0 fallback/ramstage 0x9180 stage 75335 vgaroms/seavgabios.bin 0x1b800 raw 27648 config 0x22480 raw 107 revision 0x22540 raw 570 spd.bin 0x227c0 spd 2048 cmos_layout.bin 0x23000 cmos_layout 1132 fallback/postcar 0x234c0 stage 24932 fallback/dsdt.aml 0x29680 raw 16738 fallback/payload 0x2d840 payload 63916 payload_config 0x3d240 raw 1652 payload_revision 0x3d900 raw 234 (empty) 0x3da40 null 1713240 mrc.cache 0x1dfec0 mrc_cache 65536 (empty) 0x1eff00 null 16280 bootblock 0x1f3ec0 bootblock 49152 ➜ coreboot git:(master) build/cbfstool build/coreboot.rom layout -w This image contains the following sections that can be accessed with this tool:
'BIOS' (read-only, size 2097152) 'FMAP' (read-only, size 256) 'COREBOOT' (CBFS, size 2096896)
It is at least possible to perform the read action on every section listed above.
```
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王翔
安全研究员
广州市腾御安信息科技有限公司
广州市天河区珠江新城华穗路406号保利克洛维二期中景A座1020-1024