CRIS: Merge machine dependent boot/compressed and boot/rescue
Merge the machine dependent boot directories for v10 and v32. This avoids some code duplication and eases the way for further merging later on. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Dieser Commit ist enthalten in:
Jesper Nilsson
38
arch/cris/boot/compressed/Makefile
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38
arch/cris/boot/compressed/Makefile
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#
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# arch/cris/boot/compressed/Makefile
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#
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asflags-y += $(LINUXINCLUDE)
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ccflags-y += -O2 $(LINUXINCLUDE)
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# asflags-$(CONFIG_ETRAX_ARCH_V32) += -I$(srctree)/include/asm/mach \
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# -I$(srctree)/include/asm/arch
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# ccflags-$(CONFIG_ETRAX_ARCH_V32) += -O2 -I$(srctree)/include/asm/mach
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# -I$(srctree)/include/asm/arch
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arch-$(CONFIG_ETRAX_ARCH_V10) = v10
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arch-$(CONFIG_ETRAX_ARCH_V32) = v32
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ldflags-y += -T $(srctree)/$(src)/decompress_$(arch-y).lds
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OBJECTS-$(CONFIG_ETRAX_ARCH_V32) = $(obj)/head_v32.o
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OBJECTS-$(CONFIG_ETRAX_ARCH_V10) = $(obj)/head_v10.o
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OBJECTS= $(OBJECTS-y) $(obj)/misc.o
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OBJCOPYFLAGS = -O binary --remove-section=.bss
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quiet_cmd_image = BUILD $@
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cmd_image = cat $(obj)/decompress.bin $(obj)/piggy.gz > $@
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targets := vmlinux piggy.gz decompress.o decompress.bin
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$(obj)/decompress.o: $(OBJECTS) FORCE
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$(call if_changed,ld)
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$(obj)/decompress.bin: $(obj)/decompress.o FORCE
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$(call if_changed,objcopy)
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$(obj)/vmlinux: $(obj)/piggy.gz $(obj)/decompress.bin FORCE
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$(call if_changed,image)
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$(obj)/piggy.gz: $(obj)/../Image FORCE
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$(call if_changed,gzip)
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24
arch/cris/boot/compressed/README
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24
arch/cris/boot/compressed/README
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Creation of the self-extracting compressed kernel image (vmlinuz)
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-----------------------------------------------------------------
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This can be slightly confusing because it's a process with many steps.
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The kernel object built by the arch/etrax100/Makefile, vmlinux, is split
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by that makefile into text and data binary files, vmlinux.text and
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vmlinux.data.
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Those files together with a ROM filesystem can be catted together and
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burned into a flash or executed directly at the DRAM origin.
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They can also be catted together and compressed with gzip, which is what
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happens in this makefile. Together they make up piggy.img.
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The decompressor is built into the file decompress.o. It is turned into
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the binary file decompress.bin, which is catted together with piggy.img
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into the file vmlinuz. It can be executed in an arbitrary place in flash.
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Be careful - it assumes some things about free locations in DRAM. It
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assumes the DRAM starts at 0x40000000 and that it is at least 8 MB,
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so it puts its code at 0x40700000, and initial stack at 0x40800000.
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-Bjorn
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30
arch/cris/boot/compressed/decompress_v10.lds
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30
arch/cris/boot/compressed/decompress_v10.lds
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/* OUTPUT_FORMAT(elf32-us-cris) */
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OUTPUT_FORMAT(elf32-cris)
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MEMORY
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{
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dram : ORIGIN = 0x40700000,
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LENGTH = 0x00100000
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}
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SECTIONS
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{
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.text :
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{
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_stext = . ;
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*(.text)
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*(.rodata)
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*(.rodata.*)
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_etext = . ;
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} > dram
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.data :
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{
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*(.data)
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_edata = . ;
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} > dram
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.bss :
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{
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*(.bss)
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_end = ALIGN( 0x10 ) ;
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} > dram
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}
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30
arch/cris/boot/compressed/decompress_v32.lds
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30
arch/cris/boot/compressed/decompress_v32.lds
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/*#OUTPUT_FORMAT(elf32-us-cris) */
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OUTPUT_ARCH (crisv32)
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MEMORY
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{
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dram : ORIGIN = 0x40700000,
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LENGTH = 0x00100000
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}
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SECTIONS
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{
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.text :
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{
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_stext = . ;
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*(.text)
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*(.rodata)
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*(.rodata.*)
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_etext = . ;
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} > dram
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.data :
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{
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*(.data)
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_edata = . ;
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} > dram
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.bss :
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{
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*(.bss)
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_end = ALIGN( 0x10 ) ;
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} > dram
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}
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126
arch/cris/boot/compressed/head_v10.S
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126
arch/cris/boot/compressed/head_v10.S
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/*
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* arch/cris/boot/compressed/head.S
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*
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* Copyright (C) 1999, 2001 Axis Communications AB
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*
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* Code that sets up the DRAM registers, calls the
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* decompressor to unpack the piggybacked kernel, and jumps.
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*
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*/
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#define ASSEMBLER_MACROS_ONLY
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#include <arch/sv_addr_ag.h>
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#define RAM_INIT_MAGIC 0x56902387
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#define COMMAND_LINE_MAGIC 0x87109563
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;; Exported symbols
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.globl input_data
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.text
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nop
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di
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;; We need to initialze DRAM registers before we start using the DRAM
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cmp.d RAM_INIT_MAGIC, $r8 ; Already initialized?
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beq dram_init_finished
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nop
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#include "../../arch-v10/lib/dram_init.S"
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dram_init_finished:
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;; Initiate the PA and PB ports
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move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r0
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move.b $r0, [R_PORT_PA_DATA]
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move.b CONFIG_ETRAX_DEF_R_PORT_PA_DIR, $r0
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move.b $r0, [R_PORT_PA_DIR]
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move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r0
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move.b $r0, [R_PORT_PB_DATA]
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move.b CONFIG_ETRAX_DEF_R_PORT_PB_DIR, $r0
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move.b $r0, [R_PORT_PB_DIR]
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;; Setup the stack to a suitably high address.
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;; We assume 8 MB is the minimum DRAM in an eLinux
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;; product and put the sp at the top for now.
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move.d 0x40800000, $sp
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;; Figure out where the compressed piggyback image is
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;; in the flash (since we wont try to copy it to DRAM
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;; before unpacking). It is at _edata, but in flash.
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;; Use (_edata - basse) as offset to the current PC.
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basse: move.d $pc, $r5
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and.d 0x7fffffff, $r5 ; strip any non-cache bit
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subq 2, $r5 ; compensate for the move.d $pc instr
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move.d $r5, $r0 ; save for later - flash address of 'basse'
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add.d _edata, $r5
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sub.d basse, $r5 ; $r5 = flash address of '_edata'
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;; Copy text+data to DRAM
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move.d basse, $r1 ; destination
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move.d _edata, $r2 ; end destination
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1: move.w [$r0+], $r3
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move.w $r3, [$r1+]
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cmp.d $r2, $r1
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bcs 1b
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nop
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move.d $r5, [input_data] ; for the decompressor
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;; Clear the decompressors BSS (between _edata and _end)
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moveq 0, $r0
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move.d _edata, $r1
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move.d _end, $r2
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1: move.w $r0, [$r1+]
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cmp.d $r2, $r1
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bcs 1b
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nop
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;; Save command line magic and address.
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move.d _cmd_line_magic, $r12
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move.d $r10, [$r12]
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move.d _cmd_line_addr, $r12
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move.d $r11, [$r12]
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;; Do the decompression and save compressed size in inptr
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jsr decompress_kernel
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;; Put start address of root partition in $r9 so the kernel can use it
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;; when mounting from flash
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move.d [input_data], $r9 ; flash address of compressed kernel
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add.d [inptr], $r9 ; size of compressed kernel
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;; Restore command line magic and address.
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move.d _cmd_line_magic, $r10
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move.d [$r10], $r10
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move.d _cmd_line_addr, $r11
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move.d [$r11], $r11
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;; Enter the decompressed kernel
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move.d RAM_INIT_MAGIC, $r8 ; Tell kernel that DRAM is initialized
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jump 0x40004000 ; kernel is linked to this address
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.data
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input_data:
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.dword 0 ; used by the decompressor
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_cmd_line_magic:
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.dword 0
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_cmd_line_addr:
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.dword 0
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#include "../../arch-v10/lib/hw_settings.S"
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145
arch/cris/boot/compressed/head_v32.S
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145
arch/cris/boot/compressed/head_v32.S
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/*
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* Code that sets up the DRAM registers, calls the
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* decompressor to unpack the piggybacked kernel, and jumps.
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*
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* Copyright (C) 1999 - 2006, Axis Communications AB
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*/
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#define ASSEMBLER_MACROS_ONLY
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#include <hwregs/asm/reg_map_asm.h>
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#include <mach/startup.inc>
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#define RAM_INIT_MAGIC 0x56902387
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#define COMMAND_LINE_MAGIC 0x87109563
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;; Exported symbols
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.globl input_data
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.text
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start:
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di
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;; Start clocks for used blocks.
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START_CLOCKS
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;; Initialize the DRAM registers.
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cmp.d RAM_INIT_MAGIC, $r8 ; Already initialized?
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beq dram_init_finished
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nop
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#if defined CONFIG_ETRAXFS
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#include "../../arch-v32/mach-fs/dram_init.S"
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#elif defined CONFIG_CRIS_MACH_ARTPEC3
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#include "../../arch-v32/mach-a3/dram_init.S"
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#else
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#error Only ETRAXFS and ARTPEC-3 supported!
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#endif
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dram_init_finished:
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GIO_INIT
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;; Setup the stack to a suitably high address.
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;; We assume 8 MB is the minimum DRAM and put
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;; the SP at the top for now.
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move.d 0x40800000, $sp
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;; Figure out where the compressed piggyback image is.
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;; It is either in [NOR] flash (we don't want to copy it
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;; to DRAM before unpacking), or copied to DRAM
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;; by the [NAND] flash boot loader.
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;; The piggyback image is at _edata, but relative to where the
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;; image is actually located in memory, not where it is linked
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;; (the decompressor is linked at 0x40700000+ and runs there).
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;; Use (_edata - herami) as offset to the current PC.
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hereami:
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lapcq ., $r5 ; get PC
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and.d 0x7fffffff, $r5 ; strip any non-cache bit
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move.d $r5, $r0 ; source address of 'herami'
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add.d _edata, $r5
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sub.d hereami, $r5 ; r5 = flash address of '_edata'
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move.d hereami, $r1 ; destination
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;; Copy text+data to DRAM
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move.d _edata, $r2 ; end destination
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1: move.w [$r0+], $r3 ; from herami+ source
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move.w $r3, [$r1+] ; to hereami+ destination (linked address)
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cmp.d $r2, $r1 ; finish when destination == _edata
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bcs 1b
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nop
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move.d input_data, $r0 ; for the decompressor
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move.d $r5, [$r0] ; for the decompressor
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;; Clear the decompressors BSS (between _edata and _end)
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moveq 0, $r0
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move.d _edata, $r1
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move.d _end, $r2
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1: move.w $r0, [$r1+]
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cmp.d $r2, $r1
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bcs 1b
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nop
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;; Save command line magic and address.
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move.d _cmd_line_magic, $r0
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move.d $r10, [$r0]
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move.d _cmd_line_addr, $r0
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move.d $r11, [$r0]
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;; Save boot source indicator
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move.d _boot_source, $r0
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move.d $r12, [$r0]
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;; Do the decompression and save compressed size in _inptr
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jsr decompress_kernel
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nop
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;; Restore boot source indicator
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move.d _boot_source, $r12
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move.d [$r12], $r12
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;; Restore command line magic and address.
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move.d _cmd_line_magic, $r10
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move.d [$r10], $r10
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move.d _cmd_line_addr, $r11
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move.d [$r11], $r11
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;; Put start address of root partition in r9 so the kernel can use it
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;; when mounting from flash
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move.d input_data, $r0
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move.d [$r0], $r9 ; flash address of compressed kernel
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move.d inptr, $r0
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add.d [$r0], $r9 ; size of compressed kernel
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cmp.d 0x40000000, $r9 ; image in DRAM ?
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blo enter_kernel ; no, must be [NOR] flash, jump
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nop ; delay slot
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and.d 0x001fffff, $r9 ; assume compressed kernel was < 2M
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enter_kernel:
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;; Enter the decompressed kernel
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move.d RAM_INIT_MAGIC, $r8 ; Tell kernel that DRAM is initialized
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jump 0x40004000 ; kernel is linked to this address
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nop
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.data
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input_data:
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.dword 0 ; used by the decompressor
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_cmd_line_magic:
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.dword 0
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_cmd_line_addr:
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.dword 0
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_boot_source:
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.dword 0
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#if defined CONFIG_ETRAXFS
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#include "../../arch-v32/mach-fs/hw_settings.S"
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#elif defined CONFIG_CRIS_MACH_ARTPEC3
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#include "../../arch-v32/mach-a3/hw_settings.S"
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#else
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#error Only ETRAXFS and ARTPEC-3 supported!
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#endif
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391
arch/cris/boot/compressed/misc.c
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391
arch/cris/boot/compressed/misc.c
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/*
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* misc.c
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*
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* This is a collection of several routines from gzip-1.0.3
|
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* adapted for Linux.
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*
|
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* malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
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* puts by Nick Holloway 1993, better puts by Martin Mares 1995
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* adaptation for Linux/CRIS Axis Communications AB, 1999
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*
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*/
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/* where the piggybacked kernel image expects itself to live.
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* it is the same address we use when we network load an uncompressed
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* image into DRAM, and it is the address the kernel is linked to live
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* at by vmlinux.lds.S
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*/
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#define KERNEL_LOAD_ADR 0x40004000
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#include <linux/types.h>
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#ifdef CONFIG_ETRAX_ARCH_V32
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#include <hwregs/reg_rdwr.h>
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#include <hwregs/reg_map.h>
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#include <hwregs/ser_defs.h>
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#include <hwregs/pinmux_defs.h>
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#ifdef CONFIG_CRIS_MACH_ARTPEC3
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#include <hwregs/clkgen_defs.h>
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#endif
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#else
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#include <arch/svinto.h>
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#endif
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||||
/*
|
||||
* gzip declarations
|
||||
*/
|
||||
|
||||
#define OF(args) args
|
||||
#define STATIC static
|
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|
||||
void *memset(void *s, int c, size_t n);
|
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void *memcpy(void *__dest, __const void *__src, size_t __n);
|
||||
|
||||
#define memzero(s, n) memset((s), 0, (n))
|
||||
|
||||
typedef unsigned char uch;
|
||||
typedef unsigned short ush;
|
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typedef unsigned long ulg;
|
||||
|
||||
#define WSIZE 0x8000 /* Window size must be at least 32k, */
|
||||
/* and a power of two */
|
||||
|
||||
static uch *inbuf; /* input buffer */
|
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static uch window[WSIZE]; /* Sliding window buffer */
|
||||
|
||||
unsigned inptr = 0; /* index of next byte to be processed in inbuf
|
||||
* After decompression it will contain the
|
||||
* compressed size, and head.S will read it.
|
||||
*/
|
||||
|
||||
static unsigned outcnt = 0; /* bytes in output buffer */
|
||||
|
||||
/* gzip flag byte */
|
||||
#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */
|
||||
#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
|
||||
#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
|
||||
#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
|
||||
#define COMMENT 0x10 /* bit 4 set: file comment present */
|
||||
#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
|
||||
#define RESERVED 0xC0 /* bit 6,7: reserved */
|
||||
|
||||
#define get_byte() (inbuf[inptr++])
|
||||
|
||||
/* Diagnostic functions */
|
||||
#ifdef DEBUG
|
||||
# define Assert(cond, msg) do { \
|
||||
if (!(cond)) \
|
||||
error(msg); \
|
||||
} while (0)
|
||||
# define Trace(x) fprintf x
|
||||
# define Tracev(x) do { \
|
||||
if (verbose) \
|
||||
fprintf x; \
|
||||
} while (0)
|
||||
# define Tracevv(x) do { \
|
||||
if (verbose > 1) \
|
||||
fprintf x; \
|
||||
} while (0)
|
||||
# define Tracec(c, x) do { \
|
||||
if (verbose && (c)) \
|
||||
fprintf x; \
|
||||
} while (0)
|
||||
# define Tracecv(c, x) do { \
|
||||
if (verbose > 1 && (c)) \
|
||||
fprintf x; \
|
||||
} while (0)
|
||||
#else
|
||||
# define Assert(cond, msg)
|
||||
# define Trace(x)
|
||||
# define Tracev(x)
|
||||
# define Tracevv(x)
|
||||
# define Tracec(c, x)
|
||||
# define Tracecv(c, x)
|
||||
#endif
|
||||
|
||||
static void flush_window(void);
|
||||
static void error(char *m);
|
||||
static void puts(const char *);
|
||||
|
||||
extern char *input_data; /* lives in head.S */
|
||||
|
||||
static long bytes_out;
|
||||
static uch *output_data;
|
||||
static unsigned long output_ptr;
|
||||
|
||||
/* the "heap" is put directly after the BSS ends, at end */
|
||||
|
||||
extern int _end;
|
||||
static long free_mem_ptr = (long)&_end;
|
||||
static long free_mem_end_ptr;
|
||||
|
||||
#include "../../../../../lib/inflate.c"
|
||||
|
||||
/* decompressor info and error messages to serial console */
|
||||
|
||||
#ifdef CONFIG_ETRAX_ARCH_V32
|
||||
static inline void serout(const char *s, reg_scope_instances regi_ser)
|
||||
{
|
||||
reg_ser_rs_stat_din rs;
|
||||
reg_ser_rw_dout dout = {.data = *s};
|
||||
|
||||
do {
|
||||
rs = REG_RD(ser, regi_ser, rs_stat_din);
|
||||
}
|
||||
while (!rs.tr_rdy);/* Wait for transceiver. */
|
||||
|
||||
REG_WR(ser, regi_ser, rw_dout, dout);
|
||||
}
|
||||
#endif
|
||||
|
||||
static void puts(const char *s)
|
||||
{
|
||||
#ifndef CONFIG_ETRAX_DEBUG_PORT_NULL
|
||||
while (*s) {
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT0
|
||||
#ifdef CONFIG_ETRAX_ARCH_V32
|
||||
serout(s, regi_ser0);
|
||||
#else
|
||||
while (!(*R_SERIAL0_STATUS & (1 << 5)))
|
||||
;
|
||||
*R_SERIAL0_TR_DATA = *s++;
|
||||
#endif
|
||||
#endif
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT1
|
||||
#ifdef CONFIG_ETRAX_ARCH_V32
|
||||
serout(s, regi_ser1);
|
||||
#else
|
||||
while (!(*R_SERIAL1_STATUS & (1 << 5)))
|
||||
;
|
||||
*R_SERIAL1_TR_DATA = *s++;
|
||||
#endif
|
||||
#endif
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT2
|
||||
#ifdef CONFIG_ETRAX_ARCH_V32
|
||||
serout(s, regi_ser2);
|
||||
#else
|
||||
while (!(*R_SERIAL2_STATUS & (1 << 5)))
|
||||
;
|
||||
*R_SERIAL2_TR_DATA = *s++;
|
||||
#endif
|
||||
#endif
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT3
|
||||
#ifdef CONFIG_ETRAX_ARCH_V32
|
||||
serout(s, regi_ser3);
|
||||
#else
|
||||
while (!(*R_SERIAL3_STATUS & (1 << 5)))
|
||||
;
|
||||
*R_SERIAL3_TR_DATA = *s++;
|
||||
#endif
|
||||
#endif
|
||||
*s++;
|
||||
}
|
||||
/* CONFIG_ETRAX_DEBUG_PORT_NULL */
|
||||
#endif
|
||||
}
|
||||
|
||||
void *memset(void *s, int c, size_t n)
|
||||
{
|
||||
int i;
|
||||
char *ss = (char*)s;
|
||||
|
||||
for (i=0;i<n;i++) ss[i] = c;
|
||||
|
||||
return s;
|
||||
}
|
||||
|
||||
void *memcpy(void *__dest, __const void *__src, size_t __n)
|
||||
{
|
||||
int i;
|
||||
char *d = (char *)__dest, *s = (char *)__src;
|
||||
|
||||
for (i = 0; i < __n; i++)
|
||||
d[i] = s[i];
|
||||
|
||||
return __dest;
|
||||
}
|
||||
|
||||
/* ===========================================================================
|
||||
* Write the output window window[0..outcnt-1] and update crc and bytes_out.
|
||||
* (Used for the decompressed data only.)
|
||||
*/
|
||||
|
||||
static void flush_window(void)
|
||||
{
|
||||
ulg c = crc; /* temporary variable */
|
||||
unsigned n;
|
||||
uch *in, *out, ch;
|
||||
|
||||
in = window;
|
||||
out = &output_data[output_ptr];
|
||||
for (n = 0; n < outcnt; n++) {
|
||||
ch = *out = *in;
|
||||
out++;
|
||||
in++;
|
||||
c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
|
||||
}
|
||||
crc = c;
|
||||
bytes_out += (ulg)outcnt;
|
||||
output_ptr += (ulg)outcnt;
|
||||
outcnt = 0;
|
||||
}
|
||||
|
||||
static void error(char *x)
|
||||
{
|
||||
puts("\n\n");
|
||||
puts(x);
|
||||
puts("\n\n -- System halted\n");
|
||||
|
||||
while(1); /* Halt */
|
||||
}
|
||||
|
||||
void setup_normal_output_buffer(void)
|
||||
{
|
||||
output_data = (char *)KERNEL_LOAD_ADR;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_ETRAX_ARCH_V32
|
||||
static inline void serial_setup(reg_scope_instances regi_ser)
|
||||
{
|
||||
reg_ser_rw_xoff xoff;
|
||||
reg_ser_rw_tr_ctrl tr_ctrl;
|
||||
reg_ser_rw_rec_ctrl rec_ctrl;
|
||||
reg_ser_rw_tr_baud_div tr_baud;
|
||||
reg_ser_rw_rec_baud_div rec_baud;
|
||||
|
||||
/* Turn off XOFF. */
|
||||
xoff = REG_RD(ser, regi_ser, rw_xoff);
|
||||
|
||||
xoff.chr = 0;
|
||||
xoff.automatic = regk_ser_no;
|
||||
|
||||
REG_WR(ser, regi_ser, rw_xoff, xoff);
|
||||
|
||||
/* Set baudrate and stopbits. */
|
||||
tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl);
|
||||
rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl);
|
||||
tr_baud = REG_RD(ser, regi_ser, rw_tr_baud_div);
|
||||
rec_baud = REG_RD(ser, regi_ser, rw_rec_baud_div);
|
||||
|
||||
tr_ctrl.stop_bits = 1; /* 2 stop bits. */
|
||||
tr_ctrl.en = 1; /* enable transmitter */
|
||||
rec_ctrl.en = 1; /* enabler receiver */
|
||||
|
||||
/*
|
||||
* The baudrate setup used to be a bit fishy, but now transmitter and
|
||||
* receiver are both set to the intended baud rate, 115200.
|
||||
* The magic value is 29.493 MHz.
|
||||
*/
|
||||
tr_ctrl.base_freq = regk_ser_f29_493;
|
||||
rec_ctrl.base_freq = regk_ser_f29_493;
|
||||
tr_baud.div = (29493000 / 8) / 115200;
|
||||
rec_baud.div = (29493000 / 8) / 115200;
|
||||
|
||||
REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
|
||||
REG_WR(ser, regi_ser, rw_tr_baud_div, tr_baud);
|
||||
REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl);
|
||||
REG_WR(ser, regi_ser, rw_rec_baud_div, rec_baud);
|
||||
}
|
||||
#endif
|
||||
|
||||
void decompress_kernel(void)
|
||||
{
|
||||
char revision;
|
||||
char compile_rev;
|
||||
|
||||
#ifdef CONFIG_ETRAX_ARCH_V32
|
||||
/* Need at least a CRISv32 to run. */
|
||||
compile_rev = 32;
|
||||
#if defined(CONFIG_ETRAX_DEBUG_PORT1) || \
|
||||
defined(CONFIG_ETRAX_DEBUG_PORT2) || \
|
||||
defined(CONFIG_ETRAX_DEBUG_PORT3)
|
||||
reg_pinmux_rw_hwprot hwprot;
|
||||
|
||||
#ifdef CONFIG_CRIS_MACH_ARTPEC3
|
||||
reg_clkgen_rw_clk_ctrl clk_ctrl;
|
||||
|
||||
/* Enable corresponding clock region when serial 1..3 selected */
|
||||
|
||||
clk_ctrl = REG_RD(clkgen, regi_clkgen, rw_clk_ctrl);
|
||||
clk_ctrl.sser_ser_dma6_7 = regk_clkgen_yes;
|
||||
REG_WR(clkgen, regi_clkgen, rw_clk_ctrl, clk_ctrl);
|
||||
#endif
|
||||
|
||||
/* pinmux setup for ports 1..3 */
|
||||
hwprot = REG_RD(pinmux, regi_pinmux, rw_hwprot);
|
||||
#endif
|
||||
|
||||
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT0
|
||||
serial_setup(regi_ser0);
|
||||
#endif
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT1
|
||||
hwprot.ser1 = regk_pinmux_yes;
|
||||
serial_setup(regi_ser1);
|
||||
#endif
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT2
|
||||
hwprot.ser2 = regk_pinmux_yes;
|
||||
serial_setup(regi_ser2);
|
||||
#endif
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT3
|
||||
hwprot.ser3 = regk_pinmux_yes;
|
||||
serial_setup(regi_ser3);
|
||||
#endif
|
||||
#if defined(CONFIG_ETRAX_DEBUG_PORT1) || \
|
||||
defined(CONFIG_ETRAX_DEBUG_PORT2) || \
|
||||
defined(CONFIG_ETRAX_DEBUG_PORT3)
|
||||
REG_WR(pinmux, regi_pinmux, rw_hwprot, hwprot);
|
||||
#endif
|
||||
|
||||
/* input_data is set in head.S */
|
||||
inbuf = input_data;
|
||||
#else /* CRISv10 */
|
||||
/* Need at least a crisv10 to run. */
|
||||
compile_rev = 10;
|
||||
|
||||
/* input_data is set in head.S */
|
||||
inbuf = input_data;
|
||||
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT0
|
||||
*R_SERIAL0_XOFF = 0;
|
||||
*R_SERIAL0_BAUD = 0x99;
|
||||
*R_SERIAL0_TR_CTRL = 0x40;
|
||||
#endif
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT1
|
||||
*R_SERIAL1_XOFF = 0;
|
||||
*R_SERIAL1_BAUD = 0x99;
|
||||
*R_SERIAL1_TR_CTRL = 0x40;
|
||||
#endif
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT2
|
||||
*R_GEN_CONFIG = 0x08;
|
||||
*R_SERIAL2_XOFF = 0;
|
||||
*R_SERIAL2_BAUD = 0x99;
|
||||
*R_SERIAL2_TR_CTRL = 0x40;
|
||||
#endif
|
||||
#ifdef CONFIG_ETRAX_DEBUG_PORT3
|
||||
*R_GEN_CONFIG = 0x100;
|
||||
*R_SERIAL3_XOFF = 0;
|
||||
*R_SERIAL3_BAUD = 0x99;
|
||||
*R_SERIAL3_TR_CTRL = 0x40;
|
||||
#endif
|
||||
#endif
|
||||
|
||||
setup_normal_output_buffer();
|
||||
|
||||
makecrc();
|
||||
|
||||
__asm__ volatile ("move $vr,%0" : "=rm" (revision));
|
||||
if (revision < compile_rev) {
|
||||
#ifdef CONFIG_ETRAX_ARCH_V32
|
||||
puts("You need an ETRAX FS to run Linux 2.6/crisv32\n");
|
||||
#else
|
||||
puts("You need an ETRAX 100LX to run linux 2.6\n");
|
||||
#endif
|
||||
while(1);
|
||||
}
|
||||
|
||||
puts("Uncompressing Linux...\n");
|
||||
gunzip();
|
||||
puts("Done. Now booting the kernel\n");
|
||||
}
|
||||
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