mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-18 01:34:14 +08:00
3f605ee17f
The kernel test robot reports that the "screen_bits" splash screen data
is missing for the dragen platform:
arch/m68k/68000/dragen2.c:73:16: error: 'screen_bits' undeclared (first use in this function)
73 | LSSA = (long) screen_bits;
| ^~~~~~~~~~~
arch/m68k/68000/dragen2.c:73:16: note: each undeclared identifier is reported only once for each function it appears in
Digging around a bit I found the screen_bits data structure was originally
in a screen.h file that was generated from a screen.xbm file. That was
removed in commit 0c0e6db806 ("m68k: drop unused parts of 68VZ328
Makefile").
Other splash screen initializers for 68000 targets are kept here as the
C data structures so lets do the same for this one. Add the missing
screen.h file and include it in the dragen specific startup code.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
// 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>
|
|
#include "screen.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
|
|
}
|