YAFFS2 Root Filesystem Creation and Installation (Including Issues: [drivers/video/console/vgacon.o] Error 1)
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（一）Root Filesystem Installation Q&A
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First, compile into a complete filesystem.
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Could there be an issue with my kernel? Try rebuilding it (treat it as a review exercise for generating kernel images).
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Creating the YAFFS2 filesystem.
Question 4: After decompression, nothing appears.
Answer:
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（二）Issues Encountered
[drivers/video/console/vgacon.o] error 1
[drivers/video/console] Error 2
[drivers/video] Error 2
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drivers/video/console/vgacon.c: In function 'vgacon_startup':...
When executing make uImage after configuration, the following error appears. Judging from the message, it seems related to VGA support. Here, I resolved it by disabling the VGA-related configuration options.
Device Drivers
----> Graphics support
-----> Console display driver support
-----> VGA text Console (unselecting this option resolves the issue)
CC drivers/video/console/dummycon.o
CC drivers/video/console/vgacon.o
drivers/video/console/vgacon.c: In function 'vgacon_startup':
drivers/video/console/vgacon.c:489: error: 'PCIMEM_BASE' undeclared (first use in this function)
drivers/video/console/vgacon.c:489: error: (Each undeclared identifier is reported only once
drivers/video/console/vgacon.c:489: error: for each function it appears in.)
drivers/video/console/vgacon.c: In function 'vgacon_do_font_op':
drivers/video/console/vgacon.c:1047: error: 'PCIMEM_BASE' undeclared (first use in this function)
make[3]: *** [drivers/video/console/vgacon.o] Error 1
make[2]: *** [drivers/video/console] Error 2
make[1]: *** [drivers/video] Error 2
make: *** [drivers] Error 2
[root@localhost linux-2.6.22.6]#
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Issue: [drivers/video/console/vgacon.o] error 1
drivers/video/console/vgacon.o:987: warning: comparison is always true due to limited range of data type
make[3]: *** [drivers/video/console/vgacon.o] Error 1
make[2]: *** [drivers/video/console] Error 2
make[1]: *** [drivers/video] Error 2
make: *** [drivers] Error 2
Solution:
During make menuconfig,
Graphics support ->
Console display driver support ->
VGA text console (do not select this option)