PERFORCE change 126962 for review
Warner Losh
imp at FreeBSD.org
Sat Sep 29 02:23:39 PDT 2007
http://perforce.freebsd.org/chv.cgi?CH=126962
Change 126962 by imp at imp_paco-paco on 2007/09/29 09:23:26
Update my porting notes for tonight's fun.
Affected files ...
.. //depot/projects/arm/src/sys/arm/orion/Orion-Port#2 edit
Differences ...
==== //depot/projects/arm/src/sys/arm/orion/Orion-Port#2 (text+ko) ====
@@ -47,4 +47,37 @@
+ systempage
+ at91_usart_class <oops!>
+20070929: 2:30-3:20
+o After talking to cognet@ on irc, I realized that I needed to revisit
+KERNVIRTADDR and friends. Here's their definitions from Olivier Houchard:
+ KERNVIRTADDR is the virtual address at which the kernel is
+ loaded (and linked).
+ KERNPHYSADDR is the physical address at which the kernel is
+ loaded.
+ PHYSADDR is the physical address of the RAM.
+ KERNBASE is the virtual address of the beginning of the KVA.
+ STARTUP_PAGETABLE_ADDR is a physical address, suitable for the
+ very early pagetable we build in locore.S.
+ FLASHADDR is the address of the flash, virtual or physical
+ depending on what the loader does. That, and LOADERRAMADDR
+ (the address at which the loader maps the RAM if we're running
+ with the MMU enabled, and the physical address if not), are
+ used to detect if we're running from flash, and if so copying
+ the kernel to memory.
+o Adjust std.orion to match the above, except for FLASHADDR support.
+ I had semi-bogusly mapped the load address (4MB) to 0xc0000000, but
+ instead we'll map it so that PA<->VA conversion just adds/subtracts
+ 0xc0000000 for ease of debugging (I hope).
+o copy at91.c and at91var.h to orion.c and orion.h. This forms the
+ obio bus for the orion part.
+o start working on orion_machdep.c. Copied it from kb920x_machdep.c,
+ but should be more careful about board init vs CPU/SoC init in this
+ port.
+o Cleanup uart_cpu_orion so it builds. It is still LAME.
+o Kernel links now with only a few undefines:
+../../../ddb/db_command.c:610: undefined reference to `cpu_reset'
+../../../kern/kern_clock.c:179: undefined reference to `cpu_initclocks'
+../../../kern/kern_clock.c:389: undefined reference to `cpu_stopprofclock'
+../../../kern/kern_clock.c:362: undefined reference to `cpu_startprofclock'
+../../../kern/kern_shutdown.c:484: undefined reference to `cpu_reset'
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