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Fixes include: 

. cleanup of 68328 code
 . align BSS section to 32bit
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Merge tag 'm68knommu-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu

Pull m68knommu updates from Greg Ungerer:

 - cleanup of 68328 code

 - align BSS section to 32bit

* tag 'm68knommu-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: m68328: remove duplicate code
  m68k: m68328: move platform code to separate files
  m68knommu: align BSS section to 4-byte boundaries
This commit is contained in:
Linus Torvalds 2020-12-21 10:35:11 -08:00
parent 70990afa34 8b22820efb
commit 8552d28e14
11 changed files with 192 additions and 293 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/m68k/68000/Makefile
View File

@ -10,10 +10,11 @@
# 68328, 68EZ328, 68VZ328
obj-y += entry.o ints.o timers.o
obj-$(CONFIG_M68328) += m68328.o
obj-$(CONFIG_M68EZ328) += m68EZ328.o
obj-$(CONFIG_M68VZ328) += m68VZ328.o
obj-y += entry.o ints.o timers.o m68328.o
obj-$(CONFIG_ROM) += romvec.o
obj-$(CONFIG_DRAGEN2) += dragen2.o
obj-$(CONFIG_UCSIMM) += ucsimm.o
obj-$(CONFIG_UCDIMM) += ucsimm.o
extra-y := head.o

100
arch/m68k/68000/dragen2.c Normal file
View File

@ -0,0 +1,100 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 1993 Hamish Macdonald
* Copyright (C) 1999 D. Jeff Dionne
* Copyright (C) 2001 Georges Menie, Ken Desmet
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <asm/machdep.h>
#include <asm/MC68VZ328.h>
/***************************************************************************/
/* Init Drangon Engine hardware */
/***************************************************************************/
static void dragen2_reset(void)
{
local_irq_disable();
#ifdef CONFIG_INIT_LCD
PBDATA |= 0x20; /* disable CCFL light */
PKDATA |= 0x4; /* disable LCD controller */
LCKCON = 0;
#endif
__asm__ __volatile__(
"reset\n\t"
"moveal #0x04000000, %a0\n\t"
"moveal 0(%a0), %sp\n\t"
"moveal 4(%a0), %a0\n\t"
"jmp (%a0)"
);
}
void __init init_dragen2(char *command, int size)
{
mach_reset = dragen2_reset;
#ifdef CONFIG_DIRECT_IO_ACCESS
SCR = 0x10; /* allow user access to internal registers */
#endif
/* CSGB Init */
CSGBB = 0x4000;
CSB = 0x1a1;
/* CS8900 init */
/* PK3: hardware sleep function pin, active low */
PKSEL |= PK(3); /* select pin as I/O */
PKDIR |= PK(3); /* select pin as output */
PKDATA |= PK(3); /* set pin high */
/* PF5: hardware reset function pin, active high */
PFSEL |= PF(5); /* select pin as I/O */
PFDIR |= PF(5); /* select pin as output */
PFDATA &= ~PF(5); /* set pin low */
/* cs8900 hardware reset */
PFDATA |= PF(5);
{ int i; for (i = 0; i < 32000; ++i); }
PFDATA &= ~PF(5);
/* INT1 enable (cs8900 IRQ) */
PDPOL &= ~PD(1); /* active high signal */
PDIQEG &= ~PD(1);
PDIRQEN |= PD(1); /* IRQ enabled */
#ifdef CONFIG_INIT_LCD
/* initialize LCD controller */
LSSA = (long) screen_bits;
LVPW = 0x14;
LXMAX = 0x140;
LYMAX = 0xef;
LRRA = 0;
LPXCD = 3;
LPICF = 0x08;
LPOLCF = 0;
LCKCON = 0x80;
PCPDEN = 0xff;
PCSEL = 0;
/* Enable LCD controller */
PKDIR |= 0x4;
PKSEL |= 0x4;
PKDATA &= ~0x4;
/* Enable CCFL backlighting circuit */
PBDIR |= 0x20;
PBSEL |= 0x20;
PBDATA &= ~0x20;
/* contrast control register */
PFDIR |= 0x1;
PFSEL &= ~0x1;
PWMR = 0x037F;
#endif
}

32
arch/m68k/68000/m68328.c
View File

@ -1,10 +1,11 @@
/***************************************************************************/
/*
* m68328.c - 68328 specific config
* m68328.c - 68328/68EZ328/68VZ328 specific config
*
* Copyright (C) 1993 Hamish Macdonald
* Copyright (C) 1999 D. Jeff Dionne
* Copyright (C) 2001 Georges Menie, Ken Desmet
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
@ -20,18 +21,18 @@
#include <linux/kernel.h>
#include <linux/rtc.h>
#include <asm/machdep.h>
#include <asm/MC68328.h>
#if defined(CONFIG_PILOT) || defined(CONFIG_INIT_LCD)
#if defined(CONFIG_INIT_LCD) && defined(CONFIG_M68VZ328)
#include "bootlogo-vz.h"
#elif defined(CONFIG_PILOT) || defined(CONFIG_INIT_LCD)
#include "bootlogo.h"
#endif
/***************************************************************************/
int m68328_hwclk(int set, struct rtc_time *t);
#include "m68328.h"
/***************************************************************************/
void m68328_reset (void)
static void m68328_reset(void)
{
local_irq_disable();
asm volatile ("moveal #0x10c00000, %a0;\n\t"
@ -45,12 +46,19 @@ void m68328_reset (void)
void __init config_BSP(char *command, int len)
{
pr_info("68328 support D. Jeff Dionne <jeff@uclinux.org>\n");
pr_info("68328 support Kenneth Albanowski <kjahds@kjshds.com>\n");
pr_info("68328/Pilot support Bernhard Kuhn <kuhn@lpr.e-technik.tu-muenchen.de>\n");
mach_sched_init = hw_timer_init;
mach_hwclk = m68328_hwclk;
mach_reset = m68328_reset;
mach_hwclk = m68328_hwclk;
mach_reset = m68328_reset;
#if defined(CONFIG_PILOT) && defined(CONFIG_M68328)
mach_sched_init = NULL;
#elif defined(CONFIG_UCSIMM)
init_ucsimm(command, len);
#elif defined(CONFIG_UCDIMM)
init_ucsimm(command, len);
#elif defined(CONFIG_DRAGEN2)
init_dragen2(command, len);
#endif
}
/***************************************************************************/

5
arch/m68k/68000/m68328.h Normal file
View File

@ -0,0 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
void init_dragen2(char *command, int size);
void init_ucsimm(char *command, int size);
struct rtc_time;
int m68328_hwclk(int set, struct rtc_time *t);

77
arch/m68k/68000/m68EZ328.c
View File

@ -1,77 +0,0 @@
/***************************************************************************/
/*
* m68EZ328.c - 68EZ328 specific config
*
* Copyright (C) 1993 Hamish Macdonald
* Copyright (C) 1999 D. Jeff Dionne
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
/***************************************************************************/
#include <linux/init.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/rtc.h>
#include <linux/pgtable.h>
#include <asm/machdep.h>
#include <asm/MC68EZ328.h>
#ifdef CONFIG_UCSIMM
#include <asm/bootstd.h>
#endif
/***************************************************************************/
int m68328_hwclk(int set, struct rtc_time *t);
/***************************************************************************/
void m68ez328_reset(void)
{
local_irq_disable();
asm volatile (
"moveal #0x10c00000, %a0;\n"
"moveb #0, 0xFFFFF300;\n"
"moveal 0(%a0), %sp;\n"
"moveal 4(%a0), %a0;\n"
"jmp (%a0);\n"
);
}
/***************************************************************************/
unsigned char *cs8900a_hwaddr;
static int errno;
#ifdef CONFIG_UCSIMM
_bsc0(char *, getserialnum)
_bsc1(unsigned char *, gethwaddr, int, a)
_bsc1(char *, getbenv, char *, a)
#endif
void __init config_BSP(char *command, int len)
{
unsigned char *p;
pr_info("68EZ328 DragonBallEZ support (C) 1999 Rt-Control, Inc\n");
#ifdef CONFIG_UCSIMM
pr_info("uCsimm serial string [%s]\n", getserialnum());
p = cs8900a_hwaddr = gethwaddr(0);
pr_info("uCsimm hwaddr %pM\n", p);
p = getbenv("APPEND");
if (p) strcpy(p,command);
else command[0] = 0;
#endif
mach_sched_init = hw_timer_init;
mach_hwclk = m68328_hwclk;
mach_reset = m68ez328_reset;
}
/***************************************************************************/

189
arch/m68k/68000/m68VZ328.c
View File

@ -1,189 +0,0 @@
/***************************************************************************/
/*
* m68VZ328.c - 68VZ328 specific config
*
* Copyright (C) 1993 Hamish Macdonald
* Copyright (C) 1999 D. Jeff Dionne
* Copyright (C) 2001 Georges Menie, Ken Desmet
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
/***************************************************************************/
#include <linux/init.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/kd.h>
#include <linux/netdevice.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/rtc.h>
#include <linux/pgtable.h>
#include <asm/machdep.h>
#include <asm/MC68VZ328.h>
#include <asm/bootstd.h>
#ifdef CONFIG_INIT_LCD
#include "bootlogo-vz.h"
#endif
/***************************************************************************/
int m68328_hwclk(int set, struct rtc_time *t);
/***************************************************************************/
/* Init Drangon Engine hardware */
/***************************************************************************/
#if defined(CONFIG_DRAGEN2)
static void m68vz328_reset(void)
{
local_irq_disable();
#ifdef CONFIG_INIT_LCD
PBDATA |= 0x20; /* disable CCFL light */
PKDATA |= 0x4; /* disable LCD controller */
LCKCON = 0;
#endif
__asm__ __volatile__(
"reset\n\t"
"moveal #0x04000000, %a0\n\t"
"moveal 0(%a0), %sp\n\t"
"moveal 4(%a0), %a0\n\t"
"jmp (%a0)"
);
}
static void __init init_hardware(char *command, int size)
{
#ifdef CONFIG_DIRECT_IO_ACCESS
SCR = 0x10; /* allow user access to internal registers */
#endif
/* CSGB Init */
CSGBB = 0x4000;
CSB = 0x1a1;
/* CS8900 init */
/* PK3: hardware sleep function pin, active low */
PKSEL |= PK(3); /* select pin as I/O */
PKDIR |= PK(3); /* select pin as output */
PKDATA |= PK(3); /* set pin high */
/* PF5: hardware reset function pin, active high */
PFSEL |= PF(5); /* select pin as I/O */
PFDIR |= PF(5); /* select pin as output */
PFDATA &= ~PF(5); /* set pin low */
/* cs8900 hardware reset */
PFDATA |= PF(5);
{ int i; for (i = 0; i < 32000; ++i); }
PFDATA &= ~PF(5);
/* INT1 enable (cs8900 IRQ) */
PDPOL &= ~PD(1); /* active high signal */
PDIQEG &= ~PD(1);
PDIRQEN |= PD(1); /* IRQ enabled */
#ifdef CONFIG_INIT_LCD
/* initialize LCD controller */
LSSA = (long) screen_bits;
LVPW = 0x14;
LXMAX = 0x140;
LYMAX = 0xef;
LRRA = 0;
LPXCD = 3;
LPICF = 0x08;
LPOLCF = 0;
LCKCON = 0x80;
PCPDEN = 0xff;
PCSEL = 0;
/* Enable LCD controller */
PKDIR |= 0x4;
PKSEL |= 0x4;
PKDATA &= ~0x4;
/* Enable CCFL backlighting circuit */
PBDIR |= 0x20;
PBSEL |= 0x20;
PBDATA &= ~0x20;
/* contrast control register */
PFDIR |= 0x1;
PFSEL &= ~0x1;
PWMR = 0x037F;
#endif
}
/***************************************************************************/
/* Init RT-Control uCdimm hardware */
/***************************************************************************/
#elif defined(CONFIG_UCDIMM)
static void m68vz328_reset(void)
{
local_irq_disable();
asm volatile (
"moveal #0x10c00000, %a0;\n\t"
"moveb #0, 0xFFFFF300;\n\t"
"moveal 0(%a0), %sp;\n\t"
"moveal 4(%a0), %a0;\n\t"
"jmp (%a0);\n"
);
}
unsigned char *cs8900a_hwaddr;
static int errno;
_bsc0(char *, getserialnum)
_bsc1(unsigned char *, gethwaddr, int, a)
_bsc1(char *, getbenv, char *, a)
static void __init init_hardware(char *command, int size)
{
char *p;
pr_info("uCdimm serial string [%s]\n", getserialnum());
p = cs8900a_hwaddr = gethwaddr(0);
pr_info("uCdimm hwaddr %pM\n", p);
p = getbenv("APPEND");
if (p)
strcpy(p, command);
else
command[0] = 0;
}
/***************************************************************************/
#else
static void m68vz328_reset(void)
{
}
static void __init init_hardware(char *command, int size)
{
}
/***************************************************************************/
#endif
/***************************************************************************/
void __init config_BSP(char *command, int size)
{
pr_info("68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
init_hardware(command, size);
mach_sched_init = hw_timer_init;
mach_hwclk = m68328_hwclk;
mach_reset = m68vz328_reset;
}
/***************************************************************************/

38
arch/m68k/68000/ucsimm.c Normal file
View File

@ -0,0 +1,38 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 1993 Hamish Macdonald
* Copyright (C) 1999 D. Jeff Dionne
* Copyright (C) 2001 Georges Menie, Ken Desmet
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <asm/bootstd.h>
#include <asm/machdep.h>
#include <asm/MC68VZ328.h>
#include "m68328.h"
unsigned char *cs8900a_hwaddr;
static int errno;
_bsc0(char *, getserialnum)
_bsc1(unsigned char *, gethwaddr, int, a)
_bsc1(char *, getbenv, char *, a)
void __init init_ucsimm(char *command, int size)
{
char *p;
pr_info("uCsimm/uCdimm serial string [%s]\n", getserialnum());
p = cs8900a_hwaddr = gethwaddr(0);
pr_info("uCsimm/uCdimm hwaddr %pM\n", p);
p = getbenv("APPEND");
if (p)
strcpy(p, command);
else
command[0] = 0;
}

8
arch/m68k/Kconfig.cpu
View File

@ -36,7 +36,7 @@ endchoice
if M68KCLASSIC
config M68000
bool "MC68000"
bool
depends on !MMU
select CPU_HAS_NO_BITFIELDS
select CPU_HAS_NO_MULDIV64
@ -103,7 +103,7 @@ config M68060
processor, say Y. Otherwise, say N.
config M68328
bool "MC68328"
bool
depends on !MMU
select LEGACY_TIMER_TICK
select M68000
@ -111,7 +111,7 @@ config M68328
Motorola 68328 processor support.
config M68EZ328
bool "MC68EZ328"
bool
depends on !MMU
select LEGACY_TIMER_TICK
select M68000
@ -119,7 +119,7 @@ config M68EZ328
Motorola 68EX328 processor support.
config M68VZ328
bool "MC68VZ328"
bool
depends on !MMU
select LEGACY_TIMER_TICK
select M68000

16
arch/m68k/Kconfig.machine
View File

@ -145,14 +145,13 @@ config SUN3
If you don't want to compile a kernel exclusively for a Sun 3, say N.
endif # M68KCLASSIC
config PILOT
bool
config PILOT3
bool "Pilot 1000/5000, PalmPilot Personal/Pro, or PalmIII support"
depends on M68328
depends on !MMU
select M68328
select PILOT
help
Support for the Palm Pilot 1000/5000, Personal/Pro and PalmIII.
@ -165,19 +164,22 @@ config XCOPILOT_BUGS
config UCSIMM
bool "uCsimm module support"
depends on M68EZ328
depends on !MMU
select M68EZ328
help
Support for the Arcturus Networks uCsimm module.
config UCDIMM
bool "uDsimm module support"
depends on M68VZ328
depends on !MMU
select M68VZ328
help
Support for the Arcturus Networks uDsimm module.
config DRAGEN2
bool "DragenEngine II board support"
depends on M68VZ328
depends on !MMU
select M68VZ328
help
Support for the DragenEngine II board.
@ -200,6 +202,8 @@ config MEMORY_RESERVE
help
Reserve certain memory regions on 68x328 based boards.
endif # M68KCLASSIC
config ARN5206
bool "Arnewsh 5206 board support"
depends on M5206

9
arch/m68k/kernel/setup_no.c
View File

@ -106,8 +106,16 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_UCDIMM
pr_info("uCdimm by Lineo, Inc. <www.lineo.com>\n");
#endif
#ifdef CONFIG_M68328
pr_info("68328 support D. Jeff Dionne <jeff@uclinux.org>\n");
pr_info("68328 support Kenneth Albanowski <kjahds@kjshds.com>\n");
#endif
#ifdef CONFIG_M68EZ328
pr_info("68EZ328 DragonBallEZ support (C) 1999 Rt-Control, Inc\n");
#endif
#ifdef CONFIG_M68VZ328
pr_info("M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
pr_info("68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
#endif
#ifdef CONFIG_COLDFIRE
pr_info("COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
@ -121,6 +129,7 @@ void __init setup_arch(char **cmdline_p)
pr_info("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
pr_info("68328/Pilot support Bernhard Kuhn <kuhn@lpr.e-technik.tu-muenchen.de>\n");
pr_info("TRG SuperPilot FLASH card support <info@trgnet.com>\n");
#endif
#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )

2
arch/m68k/kernel/vmlinux-nommu.lds
View File

@ -81,7 +81,7 @@ SECTIONS {
__init_end = .;
}
BSS_SECTION(0, 0, 0)
BSS_SECTION(4, 0, 4)
_end = .;