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authorwdenk <wdenk>2004-10-09 22:21:29 +0000
committerwdenk <wdenk>2004-10-09 22:21:29 +0000
commit1d9f410500f32b04b18b176386e77afacda7acfb (patch)
treec381f275ad04efac5da30ec72c14016b09437135 /doc
parent3e01d75ff25b3668191beb86ab32cb2d1fb7f73b (diff)
Patch by Steven Scholz, 16 Aug 2004:
- Introducing the concept of SoCs "./cpu/$(CPU)/$(SOC)" - creating subdirs for SoCs ./cpu/arm920t/imx and ./cpu/arm920t/s3c24x0 - moving SoC specific code out of cpu/arm920t/ into cpu/arm920t/$(SOC)/ - moving drivers/s3c24x0_i2c.c and drivers/serial_imx.c out of drivers/ into cpu/arm920t/$(SOC)/
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+[By Steven Scholz <steven.scholz@imc-berlin.de>, 16 Aug 2004]
+
+Since the cpu/ directory gets clobbered with peripheral driver code I
+started cleaning up cpu/arm920t.
+
+I introduced the concept of Soc (system on a chip) into the ./cpu
+directory. That means that code that is cpu (i.e. core) specific
+resides in
+
+ cpu/$(CPU)/
+
+and code that is specific to some SoC (i.e. vendor specific
+peripherals around the core) is moved into
+
+ cpu/$(CPU)/$(SOC)/
+
+Thus a library/archive "cpu/$(CPU)/$(SOC)/lib$(SOC).a" will be build
+and linked. Examples will be
+
+ cpu/arm920t/imx/
+ cpu/arm920t/s3c24x0
+
+One can select an SoC by passing the name of it to ./mkconfig just
+like
+
+ @./mkconfig $(@:_config=) arm arm920t vcma9 mpl s3c24x0
+
+If there's no VENDOR field (like "mpl" in the above line) one has to
+pass NULL instead:
+
+ @./mkconfig $(@:_config=) arm arm920t mx1ads NULL imx