m68knommu: platform code merge for 68000 core cpus
This patch merges all 68000 core cpus into one directory. There is a lot of common code in the 68328, 68EZ328 and 68VZ328 directories. This will also facilitate easy development of support for original stand alone MC68000 CPU machines. Signed-off-by: Luis Alves <ljalvs@gmail.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
Luis Alves
Greg Ungerer
parent
b69f0859dc
commit
99e083747d
19 changed files with 267 additions and 623 deletions
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@ -92,7 +92,7 @@ endif
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head-y := arch/m68k/kernel/head.o
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head-$(CONFIG_SUN3) := arch/m68k/kernel/sun3-head.o
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head-$(CONFIG_M68360) := arch/m68k/platform/68360/head.o
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head-$(CONFIG_M68000) := arch/m68k/platform/68328/head.o
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head-$(CONFIG_M68000) := arch/m68k/platform/68000/head.o
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head-$(CONFIG_COLDFIRE) := arch/m68k/platform/coldfire/head.o
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core-y += arch/m68k/kernel/ arch/m68k/mm/
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@ -114,9 +114,7 @@ core-$(CONFIG_M68040) += arch/m68k/fpsp040/
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core-$(CONFIG_M68060) += arch/m68k/ifpsp060/
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core-$(CONFIG_M68KFPU_EMU) += arch/m68k/math-emu/
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core-$(CONFIG_M68360) += arch/m68k/platform/68360/
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core-$(CONFIG_M68000) += arch/m68k/platform/68328/
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core-$(CONFIG_M68EZ328) += arch/m68k/platform/68EZ328/
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core-$(CONFIG_M68VZ328) += arch/m68k/platform/68VZ328/
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core-$(CONFIG_M68000) += arch/m68k/platform/68000/
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core-$(CONFIG_COLDFIRE) += arch/m68k/platform/coldfire/
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18
arch/m68k/platform/68000/Makefile
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18
arch/m68k/platform/68000/Makefile
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@ -0,0 +1,18 @@
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##################################################
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#
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# Makefile for 68000 core based cpus
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#
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# 2012.10.21, Luis Alves <ljalvs@gmail.com>
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# Merged all 68000 based cpu's config
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# files into a single directory.
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#
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# 68328, 68EZ328, 68VZ328
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obj-y += entry.o ints.o timers.o
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obj-$(CONFIG_M68328) += m68328.o
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obj-$(CONFIG_M68EZ328) += m68EZ328.o
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obj-$(CONFIG_M68VZ328) += m68VZ328.o
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obj-$(CONFIG_ROM) += romvec.o
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extra-y := head.o
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240
arch/m68k/platform/68000/head.S
Normal file
240
arch/m68k/platform/68000/head.S
Normal file
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@ -0,0 +1,240 @@
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/*
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* head.S - Common startup code for 68000 core based CPU's
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*
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* 2012.10.21, Luis Alves <ljalvs@gmail.com>, Single head.S file for all
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* 68000 core based CPU's. Based on the sources from:
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* Coldfire by Greg Ungerer <gerg@snapgear.com>
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* 68328 by D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>,
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* Kenneth Albanowski <kjahds@kjahds.com>,
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* The Silver Hammer Group, Ltd.
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*
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*/
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#include <linux/linkage.h>
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#include <linux/init.h>
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#include <asm/asm-offsets.h>
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#include <asm/thread_info.h>
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/*****************************************************************************
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* UCSIMM and UCDIMM use CONFIG_MEMORY_RESERVE to reserve some RAM
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*****************************************************************************/
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#ifdef CONFIG_MEMORY_RESERVE
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#define RAMEND (CONFIG_RAMBASE+CONFIG_RAMSIZE)-(CONFIG_MEMORY_RESERVE*0x100000)
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#else
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#define RAMEND (CONFIG_RAMBASE+CONFIG_RAMSIZE)
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#endif
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/*****************************************************************************/
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.global _start
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.global _rambase
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.global _ramvec
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.global _ramstart
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.global _ramend
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#if defined(CONFIG_PILOT) || defined(CONFIG_INIT_LCD)
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.global bootlogo_bits
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#endif
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/* Defining DEBUG_HEAD_CODE, serial port in 68x328 is inited */
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/* #define DEBUG_HEAD_CODE */
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#undef DEBUG_HEAD_CODE
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.data
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/*****************************************************************************
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* RAM setup pointers. Used by the kernel to determine RAM location and size.
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*****************************************************************************/
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_rambase:
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.long 0
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_ramvec:
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.long 0
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_ramstart:
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.long 0
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_ramend:
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.long 0
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__HEAD
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/*****************************************************************************
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* Entry point, where all begins!
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*****************************************************************************/
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_start:
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/* Pilot need this specific signature at the start of ROM */
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#ifdef CONFIG_PILOT
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.byte 0x4e, 0xfa, 0x00, 0x0a /* bra opcode (jmp 10 bytes) */
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.byte 'b', 'o', 'o', 't'
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.word 10000
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nop
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moveq #0, %d0
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movew %d0, 0xfffff618 /* Watchdog off */
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movel #0x00011f07, 0xfffff114 /* CS A1 Mask */
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#endif /* CONFIG_PILOT */
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movew #0x2700, %sr /* disable all interrupts */
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/*****************************************************************************
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* Setup PLL and wait for it to settle (in 68x328 cpu's).
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* Also, if enabled, init serial port.
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*****************************************************************************/
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#if defined(CONFIG_M68328) || \
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defined(CONFIG_M68EZ328) || \
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defined(CONFIG_M68VZ328)
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/* Serial port setup. Should only be needed if debugging this startup code. */
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#ifdef DEBUG_HEAD_CODE
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movew #0x0800, 0xfffff906 /* Ignore CTS */
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movew #0x010b, 0xfffff902 /* BAUD to 9600 */
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movew #0xe100, 0xfffff900 /* enable */
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#endif /* DEBUG_HEAD */
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#ifdef CONFIG_PILOT
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movew #0x2410, 0xfffff200 /* PLLCR */
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#else
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movew #0x2400, 0xfffff200 /* PLLCR */
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#endif
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movew #0x0123, 0xfffff202 /* PLLFSR */
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moveq #0, %d0
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movew #16384, %d0 /* PLL settle wait loop */
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_pll_settle:
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subw #1, %d0
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bne _pll_settle
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#endif /* CONFIG_M68x328 */
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/*****************************************************************************
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* If running kernel from ROM some specific initialization has to be done.
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* (Assuming that everything is already init'ed when running from RAM)
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*****************************************************************************/
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#ifdef CONFIG_ROMKERNEL
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/*****************************************************************************
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* Init chip registers (uCsimm specific)
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*****************************************************************************/
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#ifdef CONFIG_UCSIMM
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moveb #0x00, 0xfffffb0b /* Watchdog off */
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moveb #0x10, 0xfffff000 /* SCR */
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moveb #0x00, 0xfffff40b /* enable chip select */
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moveb #0x00, 0xfffff423 /* enable /DWE */
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moveb #0x08, 0xfffffd0d /* disable hardmap */
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moveb #0x07, 0xfffffd0e /* level 7 interrupt clear */
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movew #0x8600, 0xfffff100 /* FLASH at 0x10c00000 */
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movew #0x018b, 0xfffff110 /* 2Meg, enable, 0ws */
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movew #0x8f00, 0xfffffc00 /* DRAM configuration */
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movew #0x9667, 0xfffffc02 /* DRAM control */
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movew #0x0000, 0xfffff106 /* DRAM at 0x00000000 */
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movew #0x068f, 0xfffff116 /* 8Meg, enable, 0ws */
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moveb #0x40, 0xfffff300 /* IVR */
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movel #0x007FFFFF, %d0 /* IMR */
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movel %d0, 0xfffff304
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moveb 0xfffff42b, %d0
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andb #0xe0, %d0
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moveb %d0, 0xfffff42b
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#endif
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/*****************************************************************************
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* Init LCD controller.
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* (Assuming that LCD controller is already init'ed when running from RAM)
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*****************************************************************************/
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#ifdef CONFIG_INIT_LCD
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#ifdef CONFIG_PILOT
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moveb #0, 0xfffffA27 /* LCKCON */
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movel #_start, 0xfffffA00 /* LSSA */
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moveb #0xa, 0xfffffA05 /* LVPW */
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movew #0x9f, 0xFFFFFa08 /* LXMAX */
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movew #0x9f, 0xFFFFFa0a /* LYMAX */
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moveb #9, 0xfffffa29 /* LBAR */
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moveb #0, 0xfffffa25 /* LPXCD */
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moveb #0x04, 0xFFFFFa20 /* LPICF */
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moveb #0x58, 0xfffffA27 /* LCKCON */
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moveb #0x85, 0xfffff429 /* PFDATA */
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moveb #0xd8, 0xfffffA27 /* LCKCON */
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moveb #0xc5, 0xfffff429 /* PFDATA */
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moveb #0xd5, 0xfffff429 /* PFDATA */
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movel #bootlogo_bits, 0xFFFFFA00 /* LSSA */
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moveb #10, 0xFFFFFA05 /* LVPW */
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movew #160, 0xFFFFFA08 /* LXMAX */
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movew #160, 0xFFFFFA0A /* LYMAX */
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#else /* CONFIG_PILOT */
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movel #bootlogo_bits, 0xfffffA00 /* LSSA */
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moveb #0x28, 0xfffffA05 /* LVPW */
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movew #0x280, 0xFFFFFa08 /* LXMAX */
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movew #0x1df, 0xFFFFFa0a /* LYMAX */
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moveb #0, 0xfffffa29 /* LBAR */
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moveb #0, 0xfffffa25 /* LPXCD */
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moveb #0x08, 0xFFFFFa20 /* LPICF */
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moveb #0x01, 0xFFFFFA21 /* -ve pol */
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moveb #0x81, 0xfffffA27 /* LCKCON */
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movew #0xff00, 0xfffff412 /* LCD pins */
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#endif /* CONFIG_PILOT */
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#endif /* CONFIG_INIT_LCD */
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/*****************************************************************************
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* Kernel is running from FLASH/ROM (XIP)
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* Copy init text & data to RAM
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*****************************************************************************/
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moveal #_etext, %a0
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moveal #_sdata, %a1
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moveal #__bss_start, %a2
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_copy_initmem:
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movel %a0@+, %a1@+
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cmpal %a1, %a2
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bhi _copy_initmem
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#endif /* CONFIG_ROMKERNEL */
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/*****************************************************************************
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* Setup basic memory information for kernel
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*****************************************************************************/
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movel #CONFIG_VECTORBASE,_ramvec /* set vector base location */
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movel #CONFIG_RAMBASE,_rambase /* set the base of RAM */
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movel #RAMEND, _ramend /* set end ram addr */
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lea __bss_stop,%a1
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movel %a1,_ramstart
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/*****************************************************************************
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* If the kernel is in RAM, move romfs to right above bss and
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* adjust _ramstart to where romfs ends.
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*
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* (Do this only if CONFIG_MTD_UCLINUX is true)
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*****************************************************************************/
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#if defined(CONFIG_ROMFS_FS) && defined(CONFIG_RAMKERNEL) && \
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defined(CONFIG_MTD_UCLINUX)
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lea __bss_start, %a0 /* get start of bss */
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lea __bss_stop, %a1 /* set up destination */
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movel %a0, %a2 /* copy of bss start */
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movel 8(%a0), %d0 /* get size of ROMFS */
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addql #8, %d0 /* allow for rounding */
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andl #0xfffffffc, %d0 /* whole words */
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addl %d0, %a0 /* copy from end */
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addl %d0, %a1 /* copy from end */
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movel %a1, _ramstart /* set start of ram */
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_copy_romfs:
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movel -(%a0), -(%a1) /* copy dword */
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cmpl %a0, %a2 /* check if at end */
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bne _copy_romfs
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#endif /* CONFIG_ROMFS_FS && CONFIG_RAMKERNEL && CONFIG_MTD_UCLINUX */
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/*****************************************************************************
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* Clear bss region
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*****************************************************************************/
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lea __bss_start, %a0 /* get start of bss */
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lea __bss_stop, %a1 /* get end of bss */
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_clear_bss:
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movel #0, (%a0)+ /* clear each word */
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cmpl %a0, %a1 /* check if at end */
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bne _clear_bss
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/*****************************************************************************
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* Load the current task pointer and stack.
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*****************************************************************************/
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lea init_thread_union,%a0
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lea THREAD_SIZE(%a0),%sp
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jsr start_kernel /* start Linux kernel */
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_exit:
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jmp _exit /* should never get here */
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@ -1,5 +1,5 @@
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/*
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* linux/arch/m68knommu/platform/68328/ints.c
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* ints.c - Generic interrupt controller support
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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@ -1,7 +1,7 @@
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/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/68328/config.c
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* m68328.c - 68328 specific config
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*
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* Copyright (C) 1993 Hamish Macdonald
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* Copyright (C) 1999 D. Jeff Dionne
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@ -1,7 +1,7 @@
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/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/68EZ328/config.c
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* m68EZ328.c - 68EZ328 specific config
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*
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* Copyright (C) 1993 Hamish Macdonald
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* Copyright (C) 1999 D. Jeff Dionne
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@ -1,7 +1,7 @@
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/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/68VZ328/config.c
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* m68VZ328.c - 68VZ328 specific config
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*
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* Copyright (C) 1993 Hamish Macdonald
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* Copyright (C) 1999 D. Jeff Dionne
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@ -28,7 +28,7 @@
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#include <asm/bootstd.h>
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#ifdef CONFIG_INIT_LCD
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#include "bootlogo.h"
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#include "bootlogo-vz.h"
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#endif
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/***************************************************************************/
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@ -1,5 +1,5 @@
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/*
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* linux/arch/m68knommu/platform/68328/romvec.S
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* romvec.S - Vector table for 68000 cpus
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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@ -1,7 +1,7 @@
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/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/68328/timers.c
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* timers.c - Generic hardware timer support.
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*
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* Copyright (C) 1993 Hamish Macdonald
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* Copyright (C) 1999 D. Jeff Dionne
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@ -1,21 +0,0 @@
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#
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# Makefile for arch/m68knommu/platform/68328.
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#
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model-y := ram
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model-$(CONFIG_ROMKERNEL) := rom
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head-y = head-$(model-y).o
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head-$(CONFIG_PILOT) = head-pilot.o
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head-$(CONFIG_DRAGEN2) = head-de2.o
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obj-y += entry.o ints.o timers.o
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obj-$(CONFIG_M68328) += config.o
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obj-$(CONFIG_ROM) += romvec.o
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extra-y := head.o
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$(obj)/head.o: $(obj)/$(head-y)
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ln -sf $(head-y) $(obj)/head.o
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clean-files := $(obj)/head.o $(head-y)
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@ -1,128 +0,0 @@
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#define MEM_END 0x00800000 /* Memory size 8Mb */
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#undef CRT_DEBUG
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.macro PUTC CHAR
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#ifdef CRT_DEBUG
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moveq #\CHAR, %d7
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jsr putc
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#endif
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.endm
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.global _start
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.global _rambase
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.global _ramvec
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.global _ramstart
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.global _ramend
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.data
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/*
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* Set up the usable of RAM stuff
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*/
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_rambase:
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.long 0
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_ramvec:
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.long 0
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_ramstart:
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.long 0
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_ramend:
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.long 0
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.text
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_start:
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/*
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* Setup initial stack
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*/
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/* disable all interrupts */
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movew #0x2700, %sr
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movel #-1, 0xfffff304
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movel #MEM_END-4, %sp
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PUTC '\r'
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PUTC '\n'
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PUTC 'A'
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PUTC 'B'
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/*
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* Determine end of RAM
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*/
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movel #MEM_END, %a0
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movel %a0, _ramend
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PUTC 'C'
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/*
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* Move ROM filesystem above bss :-)
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*/
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moveal #__bss_start, %a0 /* romfs at the start of bss */
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moveal #__bss_stop, %a1 /* Set up destination */
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movel %a0, %a2 /* Copy of bss start */
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movel 8(%a0), %d1 /* Get size of ROMFS */
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addql #8, %d1 /* Allow for rounding */
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andl #0xfffffffc, %d1 /* Whole words */
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addl %d1, %a0 /* Copy from end */
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addl %d1, %a1 /* Copy from end */
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movel %a1, _ramstart /* Set start of ram */
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1:
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movel -(%a0), %d0 /* Copy dword */
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movel %d0, -(%a1)
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cmpl %a0, %a2 /* Check if at end */
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bne 1b
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PUTC 'D'
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/*
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* Initialize BSS segment to 0
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*/
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||||
|
||||
lea __bss_start, %a0
|
||||
lea __bss_stop, %a1
|
||||
|
||||
/* Copy 0 to %a0 until %a0 == %a1 */
|
||||
2: cmpal %a0, %a1
|
||||
beq 1f
|
||||
clrl (%a0)+
|
||||
bra 2b
|
||||
1:
|
||||
|
||||
PUTC 'E'
|
||||
|
||||
/*
|
||||
* Load the current task pointer and stack
|
||||
*/
|
||||
|
||||
lea init_thread_union, %a0
|
||||
lea 0x2000(%a0), %sp
|
||||
|
||||
PUTC 'F'
|
||||
PUTC '\r'
|
||||
PUTC '\n'
|
||||
|
||||
/*
|
||||
* Go
|
||||
*/
|
||||
|
||||
jmp start_kernel
|
||||
|
||||
/*
|
||||
* Local functions
|
||||
*/
|
||||
|
||||
#ifdef CRT_DEBUG
|
||||
putc:
|
||||
moveb %d7, 0xfffff907
|
||||
1:
|
||||
movew 0xfffff906, %d7
|
||||
andw #0x2000, %d7
|
||||
beq 1b
|
||||
rts
|
||||
#endif
|
||||
|
|
@ -1,207 +0,0 @@
|
|||
/*
|
||||
* linux/arch/m68knommu/platform/68328/head-pilot.S
|
||||
* - A startup file for the MC68328
|
||||
*
|
||||
* Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>,
|
||||
* Kenneth Albanowski <kjahds@kjahds.com>,
|
||||
* The Silver Hammer Group, Ltd.
|
||||
*
|
||||
* (c) 1995, Dionne & Associates
|
||||
* (c) 1995, DKG Display Tech.
|
||||
*/
|
||||
|
||||
#define ASSEMBLY
|
||||
|
||||
#define IMMED #
|
||||
#define DBG_PUTC(x) moveb IMMED x, 0xfffff907
|
||||
|
||||
|
||||
.global _stext
|
||||
.global _start
|
||||
|
||||
.global _rambase
|
||||
.global _ramvec
|
||||
.global _ramstart
|
||||
.global _ramend
|
||||
|
||||
.global bootlogo_bits
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
.data
|
||||
|
||||
/*
|
||||
* Set up the usable of RAM stuff. Size of RAM is determined then
|
||||
* an initial stack set up at the end.
|
||||
*/
|
||||
.align 4
|
||||
_ramvec:
|
||||
.long 0
|
||||
_rambase:
|
||||
.long 0
|
||||
_ramstart:
|
||||
.long 0
|
||||
_ramend:
|
||||
.long 0
|
||||
|
||||
.text
|
||||
|
||||
_start:
|
||||
_stext:
|
||||
|
||||
|
||||
#ifdef CONFIG_M68328
|
||||
|
||||
#ifdef CONFIG_PILOT
|
||||
.byte 0x4e, 0xfa, 0x00, 0x0a /* Jmp +X bytes */
|
||||
.byte 'b', 'o', 'o', 't'
|
||||
.word 10000
|
||||
|
||||
nop
|
||||
#endif
|
||||
|
||||
moveq #0, %d0
|
||||
movew %d0, 0xfffff618 /* Watchdog off */
|
||||
movel #0x00011f07, 0xfffff114 /* CS A1 Mask */
|
||||
|
||||
movew #0x0800, 0xfffff906 /* Ignore CTS */
|
||||
movew #0x010b, 0xfffff902 /* BAUD to 9600 */
|
||||
|
||||
movew #0x2410, 0xfffff200 /* PLLCR */
|
||||
movew #0x123, 0xfffff202 /* PLLFSR */
|
||||
|
||||
#ifdef CONFIG_PILOT
|
||||
moveb #0, 0xfffffA27 /* LCKCON */
|
||||
movel #_start, 0xfffffA00 /* LSSA */
|
||||
moveb #0xa, 0xfffffA05 /* LVPW */
|
||||
movew #0x9f, 0xFFFFFa08 /* LXMAX */
|
||||
movew #0x9f, 0xFFFFFa0a /* LYMAX */
|
||||
moveb #9, 0xfffffa29 /* LBAR */
|
||||
moveb #0, 0xfffffa25 /* LPXCD */
|
||||
moveb #0x04, 0xFFFFFa20 /* LPICF */
|
||||
moveb #0x58, 0xfffffA27 /* LCKCON */
|
||||
moveb #0x85, 0xfffff429 /* PFDATA */
|
||||
moveb #0xd8, 0xfffffA27 /* LCKCON */
|
||||
moveb #0xc5, 0xfffff429 /* PFDATA */
|
||||
moveb #0xd5, 0xfffff429 /* PFDATA */
|
||||
|
||||
moveal #0x00100000, %a3
|
||||
moveal #0x100ffc00, %a4
|
||||
#endif /* CONFIG_PILOT */
|
||||
|
||||
#endif /* CONFIG_M68328 */
|
||||
|
||||
movew #0x2700, %sr
|
||||
lea %a4@(-4), %sp
|
||||
|
||||
DBG_PUTC('\r')
|
||||
DBG_PUTC('\n')
|
||||
DBG_PUTC('A')
|
||||
|
||||
moveq #0,%d0
|
||||
movew #16384, %d0 /* PLL settle wait loop */
|
||||
L0:
|
||||
subw #1, %d0
|
||||
bne L0
|
||||
|
||||
DBG_PUTC('B')
|
||||
|
||||
/* Copy command line from beginning of RAM (+16) to end of bss */
|
||||
movel #CONFIG_VECTORBASE, %d7
|
||||
addl #16, %d7
|
||||
moveal %d7, %a0
|
||||
moveal #__bss_stop, %a1
|
||||
lea %a1@(512), %a2
|
||||
|
||||
DBG_PUTC('C')
|
||||
|
||||
/* Copy %a0 to %a1 until %a1 == %a2 */
|
||||
L2:
|
||||
movel %a0@+, %d0
|
||||
movel %d0, %a1@+
|
||||
cmpal %a1, %a2
|
||||
bhi L2
|
||||
|
||||
/* Copy data+init segment from ROM to RAM */
|
||||
moveal #_etext, %a0
|
||||
moveal #_sdata, %a1
|
||||
moveal #__init_end, %a2
|
||||
|
||||
DBG_PUTC('D')
|
||||
|
||||
/* Copy %a0 to %a1 until %a1 == %a2 */
|
||||
LD1:
|
||||
movel %a0@+, %d0
|
||||
movel %d0, %a1@+
|
||||
cmpal %a1, %a2
|
||||
bhi LD1
|
||||
|
||||
DBG_PUTC('E')
|
||||
|
||||
moveal #__bss_start, %a0
|
||||
moveal #__bss_stop, %a1
|
||||
|
||||
/* Copy 0 to %a0 until %a0 == %a1 */
|
||||
L1:
|
||||
movel #0, %a0@+
|
||||
cmpal %a0, %a1
|
||||
bhi L1
|
||||
|
||||
DBG_PUTC('F')
|
||||
|
||||
/* Copy command line from end of bss to command line */
|
||||
moveal #__bss_stop, %a0
|
||||
moveal #command_line, %a1
|
||||
lea %a1@(512), %a2
|
||||
|
||||
DBG_PUTC('G')
|
||||
|
||||
/* Copy %a0 to %a1 until %a1 == %a2 */
|
||||
L3:
|
||||
movel %a0@+, %d0
|
||||
movel %d0, %a1@+
|
||||
cmpal %a1, %a2
|
||||
bhi L3
|
||||
|
||||
movel #_sdata, %d0
|
||||
movel %d0, _rambase
|
||||
movel #__bss_stop, %d0
|
||||
movel %d0, _ramstart
|
||||
|
||||
movel %a4, %d0
|
||||
subl #4096, %d0 /* Reserve 4K of stack */
|
||||
moveq #79, %d7
|
||||
movel %d0, _ramend
|
||||
|
||||
pea 0
|
||||
pea env
|
||||
pea %sp@(4)
|
||||
pea 0
|
||||
|
||||
DBG_PUTC('H')
|
||||
|
||||
#ifdef CONFIG_PILOT
|
||||
movel #bootlogo_bits, 0xFFFFFA00
|
||||
moveb #10, 0xFFFFFA05
|
||||
movew #160, 0xFFFFFA08
|
||||
movew #160, 0xFFFFFA0A
|
||||
#endif /* CONFIG_PILOT */
|
||||
|
||||
DBG_PUTC('I')
|
||||
|
||||
lea init_thread_union, %a0
|
||||
lea 0x2000(%a0), %sp
|
||||
|
||||
DBG_PUTC('J')
|
||||
DBG_PUTC('\r')
|
||||
DBG_PUTC('\n')
|
||||
|
||||
jsr start_kernel
|
||||
_exit:
|
||||
|
||||
jmp _exit
|
||||
|
||||
|
||||
.data
|
||||
env:
|
||||
.long 0
|
||||
|
|
@ -1,141 +0,0 @@
|
|||
|
||||
.global __main
|
||||
.global __rom_start
|
||||
|
||||
.global _rambase
|
||||
.global _ramstart
|
||||
|
||||
.global splash_bits
|
||||
.global _start
|
||||
.global _stext
|
||||
.global _edata
|
||||
|
||||
#define DEBUG
|
||||
#define ROM_OFFSET 0x10C00000
|
||||
#define STACK_GAURD 0x10
|
||||
|
||||
.text
|
||||
|
||||
_start:
|
||||
_stext:
|
||||
movew #0x2700, %sr /* Exceptions off! */
|
||||
|
||||
#if 0
|
||||
/* Init chip registers. uCsimm specific */
|
||||
moveb #0x00, 0xfffffb0b /* Watchdog off */
|
||||
moveb #0x10, 0xfffff000 /* SCR */
|
||||
|
||||
movew #0x2400, 0xfffff200 /* PLLCR */
|
||||
movew #0x0123, 0xfffff202 /* PLLFSR */
|
||||
|
||||
moveb #0x00, 0xfffff40b /* enable chip select */
|
||||
moveb #0x00, 0xfffff423 /* enable /DWE */
|
||||
moveb #0x08, 0xfffffd0d /* disable hardmap */
|
||||
moveb #0x07, 0xfffffd0e /* level 7 interrupt clear */
|
||||
|
||||
movew #0x8600, 0xfffff100 /* FLASH at 0x10c00000 */
|
||||
movew #0x018b, 0xfffff110 /* 2Meg, enable, 0ws */
|
||||
|
||||
movew #0x8f00, 0xfffffc00 /* DRAM configuration */
|
||||
movew #0x9667, 0xfffffc02 /* DRAM control */
|
||||
movew #0x0000, 0xfffff106 /* DRAM at 0x00000000 */
|
||||
movew #0x068f, 0xfffff116 /* 8Meg, enable, 0ws */
|
||||
|
||||
moveb #0x40, 0xfffff300 /* IVR */
|
||||
movel #0x007FFFFF, %d0 /* IMR */
|
||||
movel %d0, 0xfffff304
|
||||
|
||||
moveb 0xfffff42b, %d0
|
||||
andb #0xe0, %d0
|
||||
moveb %d0, 0xfffff42b
|
||||
|
||||
moveb #0x08, 0xfffff907 /* Ignore CTS */
|
||||
movew #0x010b, 0xfffff902 /* BAUD to 9600 */
|
||||
movew #0xe100, 0xfffff900 /* enable */
|
||||
#endif
|
||||
|
||||
movew #16384, %d0 /* PLL settle wait loop */
|
||||
L0:
|
||||
subw #1, %d0
|
||||
bne L0
|
||||
#ifdef DEBUG
|
||||
moveq #70, %d7 /* 'F' */
|
||||
moveb %d7,0xfffff907 /* No absolute addresses */
|
||||
pclp1:
|
||||
movew 0xfffff906, %d7
|
||||
andw #0x2000, %d7
|
||||
beq pclp1
|
||||
#endif /* DEBUG */
|
||||
|
||||
#ifdef DEBUG
|
||||
moveq #82, %d7 /* 'R' */
|
||||
moveb %d7,0xfffff907 /* No absolute addresses */
|
||||
pclp3:
|
||||
movew 0xfffff906, %d7
|
||||
andw #0x2000, %d7
|
||||
beq pclp3
|
||||
#endif /* DEBUG */
|
||||
moveal #0x007ffff0, %ssp
|
||||
moveal #__bss_start, %a0
|
||||
moveal #__bss_stop, %a1
|
||||
|
||||
/* Copy 0 to %a0 until %a0 >= %a1 */
|
||||
L1:
|
||||
movel #0, %a0@+
|
||||
cmpal %a0, %a1
|
||||
bhi L1
|
||||
|
||||
#ifdef DEBUG
|
||||
moveq #67, %d7 /* 'C' */
|
||||
jsr putc
|
||||
#endif /* DEBUG */
|
||||
|
||||
pea 0
|
||||
pea env
|
||||
pea %sp@(4)
|
||||
pea 0
|
||||
|
||||
#ifdef DEBUG
|
||||
moveq #70, %d7 /* 'F' */
|
||||
jsr putc
|
||||
#endif /* DEBUG */
|
||||
|
||||
lp:
|
||||
jsr start_kernel
|
||||
jmp lp
|
||||
_exit:
|
||||
|
||||
jmp _exit
|
||||
|
||||
__main:
|
||||
/* nothing */
|
||||
rts
|
||||
|
||||
#ifdef DEBUG
|
||||
putc:
|
||||
moveb %d7,0xfffff907
|
||||
pclp:
|
||||
movew 0xfffff906, %d7
|
||||
andw #0x2000, %d7
|
||||
beq pclp
|
||||
rts
|
||||
#endif /* DEBUG */
|
||||
|
||||
.data
|
||||
|
||||
/*
|
||||
* Set up the usable of RAM stuff. Size of RAM is determined then
|
||||
* an initial stack set up at the end.
|
||||
*/
|
||||
.align 4
|
||||
_ramvec:
|
||||
.long 0
|
||||
_rambase:
|
||||
.long 0
|
||||
_ramstart:
|
||||
.long 0
|
||||
_ramend:
|
||||
.long 0
|
||||
|
||||
env:
|
||||
.long 0
|
||||
|
|
@ -1,105 +0,0 @@
|
|||
|
||||
.global _start
|
||||
.global _stext
|
||||
|
||||
.global _rambase
|
||||
.global _ramvec
|
||||
.global _ramstart
|
||||
.global _ramend
|
||||
|
||||
#ifdef CONFIG_INIT_LCD
|
||||
.global bootlogo_bits
|
||||
#endif
|
||||
|
||||
.data
|
||||
|
||||
/*
|
||||
* Set up the usable of RAM stuff. Size of RAM is determined then
|
||||
* an initial stack set up at the end.
|
||||
*/
|
||||
.align 4
|
||||
_ramvec:
|
||||
.long 0
|
||||
_rambase:
|
||||
.long 0
|
||||
_ramstart:
|
||||
.long 0
|
||||
_ramend:
|
||||
.long 0
|
||||
|
||||
#define RAMEND (CONFIG_RAMBASE + CONFIG_RAMSIZE)
|
||||
|
||||
.text
|
||||
_start:
|
||||
_stext: movew #0x2700,%sr
|
||||
#ifdef CONFIG_INIT_LCD
|
||||
movel #bootlogo_bits, 0xfffffA00 /* LSSA */
|
||||
moveb #0x28, 0xfffffA05 /* LVPW */
|
||||
movew #0x280, 0xFFFFFa08 /* LXMAX */
|
||||
movew #0x1df, 0xFFFFFa0a /* LYMAX */
|
||||
moveb #0, 0xfffffa29 /* LBAR */
|
||||
moveb #0, 0xfffffa25 /* LPXCD */
|
||||
moveb #0x08, 0xFFFFFa20 /* LPICF */
|
||||
moveb #0x01, 0xFFFFFA21 /* -ve pol */
|
||||
moveb #0x81, 0xfffffA27 /* LCKCON */
|
||||
movew #0xff00, 0xfffff412 /* LCD pins */
|
||||
#endif
|
||||
moveal #RAMEND-CONFIG_MEMORY_RESERVE*0x100000 - 0x10, %sp
|
||||
movew #32767, %d0 /* PLL settle wait loop */
|
||||
1: subq #1, %d0
|
||||
bne 1b
|
||||
|
||||
/* Copy data segment from ROM to RAM */
|
||||
moveal #_etext, %a0
|
||||
moveal #_sdata, %a1
|
||||
moveal #_edata, %a2
|
||||
|
||||
/* Copy %a0 to %a1 until %a1 == %a2 */
|
||||
1: movel %a0@+, %a1@+
|
||||
cmpal %a1, %a2
|
||||
bhi 1b
|
||||
|
||||
moveal #__bss_start, %a0
|
||||
moveal #__bss_stop, %a1
|
||||
/* Copy 0 to %a0 until %a0 == %a1 */
|
||||
|
||||
1:
|
||||
clrl %a0@+
|
||||
cmpal %a0, %a1
|
||||
bhi 1b
|
||||
|
||||
movel #_sdata, %d0
|
||||
movel %d0, _rambase
|
||||
movel #__bss_stop, %d0
|
||||
movel %d0, _ramstart
|
||||
movel #RAMEND-CONFIG_MEMORY_RESERVE*0x100000, %d0
|
||||
movel %d0, _ramend
|
||||
movel #CONFIG_VECTORBASE, %d0
|
||||
movel %d0, _ramvec
|
||||
|
||||
/*
|
||||
* load the current task pointer and stack
|
||||
*/
|
||||
lea init_thread_union, %a0
|
||||
lea 0x2000(%a0), %sp
|
||||
|
||||
1: jsr start_kernel
|
||||
bra 1b
|
||||
_exit:
|
||||
|
||||
jmp _exit
|
||||
|
||||
|
||||
putc:
|
||||
moveb %d7,0xfffff907
|
||||
1:
|
||||
movew 0xfffff906, %d7
|
||||
andw #0x2000, %d7
|
||||
beq 1b
|
||||
rts
|
||||
|
||||
.data
|
||||
env:
|
||||
.long 0
|
||||
.text
|
||||
|
||||
|
|
@ -1,5 +0,0 @@
|
|||
#
|
||||
# Makefile for arch/m68knommu/platform/68EZ328.
|
||||
#
|
||||
|
||||
obj-y := config.o
|
||||
|
|
@ -1,5 +0,0 @@
|
|||
#
|
||||
# Makefile for arch/m68k/platform/68VZ328.
|
||||
#
|
||||
|
||||
obj-y := config.o
|
||||
Loading…
Reference in a new issue