mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-02 23:16:49 +07:00
4a0312fca6
Added support for RM200C machines with big endian firmware
Added support for RM200-C40 (R5000 support)
Signed-off-by: Florian Lohoff <flo@rfc822.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
159 lines
3.4 KiB
C
159 lines
3.4 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 <asm/addrspace.h>
|
|
#include <asm/sni.h>
|
|
#include <asm/mipsprom.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_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
|
|
#define PROM_ENTRY(x) (PROM_VEC + (x))
|
|
|
|
|
|
#undef DEBUG
|
|
#ifdef DEBUG
|
|
#define DBG_PRINTF(x...) prom_printf(x)
|
|
#else
|
|
#define DBG_PRINTF(x...)
|
|
#endif
|
|
|
|
static int *(*__prom_putchar)(int) = (int *(*)(int))PROM_ENTRY(PROM_PUTCHAR);
|
|
static char *(*__prom_getenv)(char *) = (char *(*)(char *))PROM_ENTRY(PROM_GETENV);
|
|
static void (*__prom_get_memconf)(void *) = (void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF);
|
|
|
|
char *prom_getenv (char *s)
|
|
{
|
|
return __prom_getenv(s);
|
|
}
|
|
|
|
void prom_printf(char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
char ppbuf[1024];
|
|
char *bptr;
|
|
|
|
va_start(args, fmt);
|
|
vsprintf(ppbuf, fmt, args);
|
|
|
|
bptr = ppbuf;
|
|
|
|
while (*bptr != 0) {
|
|
if (*bptr == '\n')
|
|
__prom_putchar('\r');
|
|
|
|
__prom_putchar(*bptr++);
|
|
}
|
|
va_end(args);
|
|
}
|
|
|
|
unsigned long prom_free_prom_memory(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* /proc/cpuinfo system type
|
|
*
|
|
*/
|
|
static const char *systype = "Unknown";
|
|
const char *get_system_type(void)
|
|
{
|
|
return systype;
|
|
}
|
|
|
|
#define SNI_IDPROM_BASE 0xbff00000
|
|
#define SNI_IDPROM_MEMSIZE (SNI_IDPROM_BASE+0x28) /* Memsize in 16MB quantities */
|
|
#define SNI_IDPROM_BRDTYPE (SNI_IDPROM_BASE+0x29) /* Board Type */
|
|
#define SNI_IDPROM_CPUTYPE (SNI_IDPROM_BASE+0x30) /* CPU Type */
|
|
|
|
#define SNI_IDPROM_SIZE 0x1000
|
|
|
|
#ifdef DEBUG
|
|
static void sni_idprom_dump(void)
|
|
{
|
|
int i;
|
|
|
|
prom_printf("SNI IDProm dump (first 128byte):\n");
|
|
for(i=0;i<128;i++) {
|
|
if (i%16 == 0)
|
|
prom_printf("%04x ", i);
|
|
|
|
prom_printf("%02x ", *(unsigned char *) (SNI_IDPROM_BASE+i));
|
|
|
|
if (i%16 == 15)
|
|
prom_printf("\n");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void sni_mem_init(void )
|
|
{
|
|
int i, memsize;
|
|
struct membank {
|
|
u32 size;
|
|
u32 base;
|
|
u32 size2;
|
|
u32 pad1;
|
|
u32 pad2;
|
|
} memconf[8];
|
|
|
|
/* MemSIZE from prom in 16MByte chunks */
|
|
memsize=*((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
|
|
|
|
DBG_PRINTF("IDProm memsize: %lu MByte\n", memsize);
|
|
|
|
/* get memory bank layout from prom */
|
|
__prom_get_memconf(&memconf);
|
|
|
|
DBG_PRINTF("prom_get_mem_conf memory configuration:\n");
|
|
for(i=0;i<8 && memconf[i].size;i++) {
|
|
prom_printf("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;
|
|
char **argv = (void *)fw_arg1;
|
|
unsigned int sni_brd_type = *(unsigned char *) SNI_IDPROM_BRDTYPE;
|
|
int i;
|
|
|
|
DBG_PRINTF("Found SNI brdtype %02x\n", sni_brd_type);
|
|
|
|
#ifdef DEBUG
|
|
sni_idprom_dump();
|
|
#endif
|
|
sni_mem_init();
|
|
|
|
/* copy prom cmdline parameters to kernel cmdline */
|
|
for (i = 1; i < argc; i++) {
|
|
strcat(arcs_cmdline, argv[i]);
|
|
if (i < (argc - 1))
|
|
strcat(arcs_cmdline, " ");
|
|
}
|
|
}
|
|
|