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Use absolute address to lowmem variables

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This commit is contained in:
Laurent Vivier 2004-05-25 19:32:12 +00:00
parent 25aa3bb8ff
commit cf8d13a76f
2 changed files with 14 additions and 27 deletions
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14
second/ld.script
View File

@ -1,20 +1,6 @@
OUTPUT_ARCH(m68k)
SECTIONS
{
MemTop = 0x0108;
VIA1Base = 0x01D4;
SCCRd = 0x01d8;
ROMBase = 0x02ae;
HWCfgFlags = 0x0B22;
SCSIBase = 0x0C00;
ASCBase = 0x0CC0;
TimeVIADB = 0x0cea;
VIA2Base = 0x0CEC;
TimeDBRA = 0x0D00;
PMgrBase = 0x0D18;
UnivROMBits = 0x0DD4;
Time = 0x020C;
.text :
{
__bootloader_start = .;

27
second/lowmem.h
View File

@ -6,16 +6,17 @@
/* these symbols are defined in ld.script */
extern unsigned long VIA1Base;
extern unsigned long SCCRd;
extern unsigned long ROMBase;
extern unsigned long HWCfgFlags;
extern unsigned long SCSIBase;
extern unsigned long ASCBase;
extern unsigned long VIA2Base;
extern unsigned long PMgrBase;
extern unsigned long UnivROMBits;
extern unsigned short TimeVIADB;
extern unsigned short TimeDBRA;
extern unsigned long MemTop;
extern unsigned long Time;
#define VIA1Base (*(unsigned long*)0x01D4)
#define SCCRd (*(unsigned long*)0x01d8)
#define ROMBase (*(unsigned long*)0x02ae)
#define HWCfgFlags (*(unsigned long*)0x0B22)
#define SCSIBase (*(unsigned long*)0x0C00)
#define ASCBase (*(unsigned long*)0x0CC0)
#define VIA2Base (*(unsigned long*)0x0CEC)
#define PMgrBase (*(unsigned long*)0x0D18)
#define UnivROMBits (*(unsigned long*)0x0DD4)
#define TimeVIADB (*(unsigned short*)0x0cea)
#define TimeDBRA (*(unsigned short*)0x0D00)
#define MemTop (*(unsigned long*)0x0108)
#define Time (*(unsigned long*)0x020C)