231a35d372
- EISA support for non PCI RMs (RM200 and RM400-xxx). The major part is the splitting of the EISA and onboard ISA of the RM200, which makes the EISA bus on the RM200 look like on other RMs. - 64bit kernel support - system type detection is now common for big and little endian - moved sniprom code to arch/mips/fw - added call_o32 function to arch/mips/fw/lib, which uses a private stack for calling prom functions - fix problem with ISA interrupts, which makes using PIT clockevent possible Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
/*
|
|
* Big Endian PROM code for SNI RM machines
|
|
*
|
|
* 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.
|
|
*
|
|
* Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org)
|
|
* Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/string.h>
|
|
#include <linux/console.h>
|
|
|
|
#include <asm/addrspace.h>
|
|
#include <asm/sni.h>
|
|
#include <asm/mipsprom.h>
|
|
#include <asm/mipsregs.h>
|
|
#include <asm/bootinfo.h>
|
|
|
|
/* special SNI prom calls */
|
|
/*
|
|
* This does not exist in all proms - SINIX compares
|
|
* the prom env variable "version" against "2.0008"
|
|
* or greater. If lesser it tries to probe interesting
|
|
* registers
|
|
*/
|
|
#define PROM_GET_MEMCONF 58
|
|
#define PROM_GET_HWCONF 61
|
|
|
|
#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
|
|
#define PROM_ENTRY(x) (PROM_VEC + (x))
|
|
|
|
#define ___prom_putchar ((int *(*)(int))PROM_ENTRY(PROM_PUTCHAR))
|
|
#define ___prom_getenv ((char *(*)(char *))PROM_ENTRY(PROM_GETENV))
|
|
#define ___prom_get_memconf ((void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF))
|
|
#define ___prom_get_hwconf ((u32 (*)(void))PROM_ENTRY(PROM_GET_HWCONF))
|
|
|
|
#ifdef CONFIG_64BIT
|
|
|
|
static u8 o32_stk[16384];
|
|
#define O32_STK &o32_stk[sizeof(o32_stk)]
|
|
|
|
#define __PROM_O32(fun, arg) fun arg __asm__(#fun); \
|
|
__asm__(#fun " = call_o32")
|
|
|
|
int __PROM_O32(__prom_putchar, (int *(*)(int), void *, int));
|
|
char *__PROM_O32(__prom_getenv, (char *(*)(char *), void *, char *));
|
|
void __PROM_O32(__prom_get_memconf, (void (*)(void *), void *, void *));
|
|
u32 __PROM_O32(__prom_get_hwconf, (u32 (*)(void), void *));
|
|
|
|
#define _prom_putchar(x) __prom_putchar(___prom_putchar, O32_STK, x)
|
|
#define _prom_getenv(x) __prom_getenv(___prom_getenv, O32_STK, x)
|
|
#define _prom_get_memconf(x) __prom_get_memconf(___prom_get_memconf, O32_STK, x)
|
|
#define _prom_get_hwconf() __prom_get_hwconf(___prom_get_hwconf, O32_STK)
|
|
|
|
#else
|
|
#define _prom_putchar(x) ___prom_putchar(x)
|
|
#define _prom_getenv(x) ___prom_getenv(x)
|
|
#define _prom_get_memconf(x) ___prom_get_memconf(x)
|
|
#define _prom_get_hwconf(x) ___prom_get_hwconf(x)
|
|
#endif
|
|
|
|
void prom_putchar(char c)
|
|
{
|
|
_prom_putchar(c);
|
|
}
|
|
|
|
|
|
char *prom_getenv(char *s)
|
|
{
|
|
return _prom_getenv(s);
|
|
}
|
|
|
|
void *prom_get_hwconf(void)
|
|
{
|
|
u32 hwconf = _prom_get_hwconf();
|
|
|
|
if (hwconf == 0xffffffff)
|
|
return NULL;
|
|
|
|
return (void *)CKSEG1ADDR(hwconf);
|
|
}
|
|
|
|
void __init prom_free_prom_memory(void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* /proc/cpuinfo system type
|
|
*
|
|
*/
|
|
char *system_type = "Unknown";
|
|
const char *get_system_type(void)
|
|
{
|
|
return system_type;
|
|
}
|
|
|
|
static void __init sni_mem_init(void)
|
|
{
|
|
int i, memsize;
|
|
struct membank {
|
|
u32 size;
|
|
u32 base;
|
|
u32 size2;
|
|
u32 pad1;
|
|
u32 pad2;
|
|
} memconf[8];
|
|
int brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
|
|
|
|
|
|
/* MemSIZE from prom in 16MByte chunks */
|
|
memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
|
|
|
|
pr_debug("IDProm memsize: %u MByte\n", memsize);
|
|
|
|
/* get memory bank layout from prom */
|
|
_prom_get_memconf(&memconf);
|
|
|
|
pr_debug("prom_get_mem_conf memory configuration:\n");
|
|
for (i = 0; i < 8 && memconf[i].size; i++) {
|
|
if (brd_type == SNI_BRD_PCI_TOWER ||
|
|
brd_type == SNI_BRD_PCI_TOWER_CPLUS) {
|
|
if (memconf[i].base >= 0x20000000 &&
|
|
memconf[i].base < 0x30000000)
|
|
memconf[i].base -= 0x20000000;
|
|
}
|
|
pr_debug("Bank%d: %08x @ %08x\n", i,
|
|
memconf[i].size, memconf[i].base);
|
|
add_memory_region(memconf[i].base, memconf[i].size,
|
|
BOOT_MEM_RAM);
|
|
}
|
|
}
|
|
|
|
void __init prom_init(void)
|
|
{
|
|
int argc = fw_arg0;
|
|
u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1);
|
|
int i;
|
|
|
|
sni_mem_init();
|
|
|
|
/* copy prom cmdline parameters to kernel cmdline */
|
|
for (i = 1; i < argc; i++) {
|
|
strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i]));
|
|
if (i < (argc - 1))
|
|
strcat(arcs_cmdline, " ");
|
|
}
|
|
}
|