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gem5 / public / gem5 / b82860cc988898a40a0e72b09b5d97701ae23b21 / . / system / alpha / console / console.c
blob: 847c375b01f525d130ea793a2dc3b9e5bca85253 [file] [log] [blame]
/*
* Copyright (c) 2003-2004 The Regents of The University of Michigan
* Copyright (c) 1993 The Hewlett-Packard Development Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* ******************************************
* M5 Console
* ******************************************/
#include <linux/stddef.h>
#include <sys/types.h>
#define CONSOLE
#include "access.h"
#include "cserve.h"
#include "rpb.h"
#define CONS_INT_TX 0x01 /* interrupt enable / state bits */
#define CONS_INT_RX 0x02
#define PAGE_SIZE (8192)
#define KSTACK_REGION_VA 0x20040000
#define KSEG 0xfffffc0000000000
#define K1BASE 0xfffffc8000000000
#define KSEG_TO_PHYS(x) (((ulong)x) & ~KSEG)
#define ROUNDUP8(x) ((ulong)(((ulong)x)+7) & ~7)
#define ROUNDUP128(x) ((ulong)(((ulong)x) + 127) & ~127)
#define ROUNDUP8K(x) ((ulong)(((ulong)(x)) + 8191) & ~8191)
#define FIRST(x) ((((ulong)(x)) >> 33) & 0x3ff)
#define SECOND(x) ((((ulong)(x)) >> 23) & 0x3ff)
#define THIRD(x) ((((ulong)(x)) >> 13) & 0x3ff)
#define THIRD_XXX(x) ((((ulong)(x)) >> 13) & 0xfff)
#define PFN(x) ((((ulong)(x) & ~KSEG) >> 13))
/* Kernel write | kernel read | valid */
#define KPTE(x) ((ulong)((((ulong)(x)) << 32) | 0x1101))
#define HWRPB_PAGES 16
#define NUM_KERNEL_THIRD (4)
#define printf_lock(args...) \
do { \
SpinLock(&theLock); \
printf(args); \
SpinUnlock(&theLock); \
} while (0)
void unixBoot(int argc, char **argv);
void JToKern(char *bootadr, ulong rpb_percpu, ulong free_pfn, ulong k_argc,
char **k_argv, char **envp);
void JToPal(ulong bootadr);
void SlaveLoop(int cpu);
volatile struct AlphaAccess *m5AlphaAccess;
struct AlphaAccess m5Conf;
ulong theLock;
extern void SpinLock(ulong *lock);
#define SpinUnlock(_x) *(_x) = 0;
struct _kernel_params {
char *bootadr;
ulong rpb_percpu;
ulong free_pfn;
ulong argc;
ulong argv;
ulong envp; /* NULL */
};
extern consoleCallback[];
extern consoleFixup[];
long CallBackDispatcher();
long CallBackFixup();
/*
* m5 console output
*/
void
InitConsole()
{
}
char
GetChar()
{
return m5AlphaAccess->inputChar;
}
void
PutChar(char c)
{
m5AlphaAccess->outputChar = c;
}
int
passArgs(int argc)
{
return 0;
}
int
main(int argc, char **argv)
{
int x, i;
uint *k1ptr, *ksegptr;
InitConsole();
printf_lock("M5 console: m5AlphaAccess @ 0x%x\n", m5AlphaAccess);
/*
* get configuration from backdoor
*/
m5Conf.last_offset = m5AlphaAccess->last_offset;
printf_lock("Got Configuration %d\n", m5Conf.last_offset);
m5Conf.last_offset = m5AlphaAccess->last_offset;
m5Conf.version = m5AlphaAccess->version;
m5Conf.numCPUs = m5AlphaAccess->numCPUs;
m5Conf.intrClockFrequency = m5AlphaAccess->intrClockFrequency;
m5Conf.cpuClock = m5AlphaAccess->cpuClock;
m5Conf.mem_size = m5AlphaAccess->mem_size;
m5Conf.kernStart = m5AlphaAccess->kernStart;
m5Conf.kernEnd = m5AlphaAccess->kernEnd;
m5Conf.entryPoint = m5AlphaAccess->entryPoint;
m5Conf.diskUnit = m5AlphaAccess->diskUnit;
m5Conf.diskCount = m5AlphaAccess->diskCount;
m5Conf.diskPAddr = m5AlphaAccess->diskPAddr;
m5Conf.diskBlock = m5AlphaAccess->diskBlock;
m5Conf.diskOperation = m5AlphaAccess->diskOperation;
m5Conf.outputChar = m5AlphaAccess->outputChar;
m5Conf.inputChar = m5AlphaAccess->inputChar;
if (m5Conf.version != ALPHA_ACCESS_VERSION) {
panic("Console version mismatch. Console expects %d. has %d \n",
ALPHA_ACCESS_VERSION, m5Conf.version);
}
/*
* setup arguments to kernel
*/
unixBoot(argc, argv);
panic("unix failed to boot\n");
return 1;
}
/*
* BOOTING
*/
struct rpb m5_rpb = {
NULL, /* 000: physical self-reference */
((long)'H') | (((long)'W') << 8) | (((long)'R') << 16) |
((long)'P' << 24) | (((long)'B') << 32), /* 008: contains "HWRPB" */
6, /* 010: HWRPB version number */
/* the byte count is wrong, but who needs it? - lance */
0, /* 018: bytes in RPB perCPU CTB CRB MEDSC */
0, /* 020: primary cpu id */
PAGE_SIZE, /* 028: page size in bytes */
43, /* 030: number of phys addr bits */
127, /* 038: max valid ASN */
{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','1'},
/* 040: system serial num: 10 ascii chars */
0, /* OVERRIDDEN */
(1<<10), /* 058: system variation */
'c'|('o'<<8)|('o'<<16)|('l'<< 24), /* 060: system revision */
1024*4096, /* 068: scaled interval clock intr freq */
0, /* 070: cycle counter frequency */
0x200000000, /* 078: virtual page table base */
0, /* 080: reserved */
0, /* 088: offset to translation buffer hint */
1, /* 090: number of processor slots OVERRIDDEN*/
sizeof(struct rpb_percpu), /* 098: per-cpu slot size. OVERRIDDEN */
0, /* 0A0: offset to per_cpu slots */
1, /* 0A8: number of CTBs */
sizeof(struct ctb_tt),
0, /* 0B8: offset to CTB (cons term block) */
0, /* 0C0: offset to CRB (cons routine block) */
0, /* 0C8: offset to memory descriptor table */
0, /* 0D0: offset to config data block */
0, /* 0D8: offset to FRU table */
0, /* 0E0: virt addr of save term routine */
0, /* 0E8: proc value for save term routine */
0, /* 0F0: virt addr of restore term routine */
0, /* 0F8: proc value for restore term routine */
0, /* 100: virt addr of CPU restart routine */
0, /* 108: proc value for CPU restart routine */
0, /* 110: used to determine presence of kdebug */
0, /* 118: reserved for hardware */
/* the checksum is wrong, but who needs it? - lance */
0, /* 120: checksum of prior entries in rpb */
0, /* 128: receive ready bitmask */
0, /* 130: transmit ready bitmask */
0, /* 138: Dynamic System Recog. offset */
};
ulong m5_tbb[] = { 0x1e1e1e1e1e1e1e1e, 0x1e1e1e1e1e1e1e1e,
0x1e1e1e1e1e1e1e1e, 0x1e1e1e1e1e1e1e1e,
0x1e1e1e1e1e1e1e1e, 0x1e1e1e1e1e1e1e1e,
0x1e1e1e1e1e1e1e1e, 0x1e1e1e1e1e1e1e1e };
struct rpb_percpu m5_rpb_percpu = {
{0,0,0,0,0,0,1,{0,0},{0,0,0,0,0,0,0,0}}, /* 000: boot/restart HWPCB */
(STATE_PA | STATE_PP | STATE_CV |
STATE_PV | STATE_PMV | STATE_PL), /* 080: per-cpu state bits */
0xc000, /* 088: palcode memory length */
0x2000, /* 090: palcode scratch length */
0x4000, /* 098: paddr of pal mem space */
0x2000, /* 0A0: paddr of pal scratch space */
(2 << 16) | (5 << 8) | 1, /* 0A8: PALcode rev required */
11 | (2L << 32), /* 0B0: processor type */
7, /* 0B8: processor variation */
'M'|('5'<<8)|('A'<<16)|('0'<<24), /* 0C0: processor revision */
{'M','5','/','A','l','p','h','a','0','0','0','0','0','0','0','0'},
/* 0C8: proc serial num: 10 chars */
0, /* 0D8: phys addr of logout area */
0, /* 0E0: len in bytes of logout area */
0, /* 0E8: halt pcb base */
0, /* 0F0: halt pc */
0, /* 0F8: halt ps */
0, /* 100: halt arg list (R25) */
0, /* 108: halt return address (R26) */
0, /* 110: halt procedure value (R27) */
0, /* 118: reason for halt */
0, /* 120: for software */
{0}, /* 128: inter-console comm buffer */
{1,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0}, /* 1D0: PALcode revs available */
0 /* 250: reserved for arch use */
/* the dump stack grows from the end of the rpb page not to reach here */
};
struct _m5_rpb_mdt {
long rpb_checksum; /* 000: checksum of entire mem desc table */
long rpb_impaddr; /* 008: PA of implementation dep info */
long rpb_numcl; /* 010: number of clusters */
struct rpb_cluster rpb_cluster[3]; /* first instance of a cluster */
};
struct _m5_rpb_mdt m5_rpb_mdt = {
0, /* 000: checksum of entire mem desc table */
0, /* 008: PA of implementation dep info */
0, /* 010: number of clusters */
{{ 0, /* 000: starting PFN of this cluster */
0, /* 008: count of PFNs in this cluster */
0, /* 010: count of tested PFNs in cluster */
0, /* 018: va of bitmap */
0, /* 020: pa of bitmap */
0, /* 028: checksum of bitmap */
1 /* 030: usage of cluster */
},
{ 0, /* 000: starting PFN of this cluster */
0, /* 008: count of PFNs in this cluster */
0, /* 010: count of tested PFNs in cluster */
0, /* 018: va of bitmap */
0, /* 020: pa of bitmap */
0, /* 028: checksum of bitmap */
0 /* 030: usage of cluster */
},
{ 0, /* 000: starting PFN of this cluster */
0, /* 008: count of PFNs in this cluster */
0, /* 010: count of tested PFNs in cluster */
0, /* 018: va of bitmap */
0, /* 020: pa of bitmap */
0, /* 028: checksum of bitmap */
0 /* 030: usage of cluster */
}}
};
/* constants for slotinfo bus_type subfield */
#define SLOTINFO_TC 0
#define SLOTINFO_ISA 1
#define SLOTINFO_EISA 2
#define SLOTINFO_PCI 3
struct rpb_ctb m5_rpb_ctb = {
CONS_DZ, /* 000: console type */
0, /* 008: console unit */
0, /* 010: reserved */
0 /* 018: byte length of device dep portion */
};
/* we don't do any fixup (aka relocate the console) - we hope */
struct rpb_crb m5_rpb_crb = {
0, /* va of call-back dispatch rtn */
0, /* pa of call-back dispatch rtn */
0, /* va of call-back fixup rtn */
0, /* pa of call-back fixup rtn */
0, /* number of entries in phys/virt map */
0 /* Number of pages to be mapped */
};
struct _rpb_name {
ulong length;
char name[16];
};
extern struct _rpb_name m5_name;
struct rpb_dsr m5_rpb_dsr = {
0,
0,
0,
};
struct _rpb_name m5_name = {
16,
{'U','M','I','C','H',' ','M','5','/','A','L','P','H','A',' ',0},
};
/*
* M5 has one LURT entry:
* 1050 is for workstations
* 1100 is servers (and is needed for CXX)
*/
long m5_lurt[10] = { 9, 12, -1, -1, -1, -1, -1, -1, 1100, 1100 };
ulong unix_boot_mem;
ulong bootadr;
char **kargv;
int kargc;
ulong free_pfn;
struct rpb_percpu *rpb_percpu;
char *
unix_boot_alloc(int pages)
{
char *ret = (char *)unix_boot_mem;
unix_boot_mem += (pages * PAGE_SIZE);
return ret;
}
ulong *first = 0;
ulong *third_rpb = 0;
ulong *reservedFixup = 0;
int strcpy(char *dst, char *src);
struct rpb *rpb;
extern ulong _end;
void
unixBoot(int argc, char **argv)
{
ulong *second, *third_kernel, ptr, *tbb, size, *percpu_logout;
unsigned char *mdt_bitmap;
long *lp1, *lp2, sum;
int i, cl;
ulong kern_first_page;
ulong mem_size = m5Conf.mem_size;
ulong mem_pages = mem_size / PAGE_SIZE, cons_pages;
ulong mdt_bitmap_pages = mem_pages / (PAGE_SIZE*8);
ulong kernel_bytes, ksp, kernel_end, *unix_kernel_stack, bss,
ksp_bottom, ksp_top;
struct rpb_ctb *rpb_ctb;
struct ctb_tt *ctb_tt;
struct rpb_dsr *rpb_dsr;
struct rpb_crb *rpb_crb;
struct _m5_rpb_mdt *rpb_mdt;
int *rpb_lurt;
char *rpb_name;
ulong nextPtr;
printf_lock("memsize %x pages %x \n", mem_size, mem_pages);
/* Allocate:
* two pages for the HWRPB
* five page table pages:
* 1: First level page table
* 1: Second level page table
* 1: Third level page table for HWRPB
* 2: Third level page table for kernel (for up to 16MB)
* set up the page tables
* load the kernel at the physical address 0x230000
* build the HWRPB
* set up memory descriptor table to give up the
* physical memory between the end of the page
* tables and the start of the kernel
* enable kseg addressing
* jump to the kernel
*/
unix_boot_mem = ROUNDUP8K(&_end);
printf_lock("First free page after ROM 0x%x\n", unix_boot_mem);
rpb = (struct rpb *)unix_boot_alloc(HWRPB_PAGES);
mdt_bitmap = (unsigned char *)unix_boot_alloc(mdt_bitmap_pages);
first = (ulong *)unix_boot_alloc(1);
second = (ulong *)unix_boot_alloc(1);
third_rpb = (ulong *)unix_boot_alloc(1);
reservedFixup = (ulong*) unix_boot_alloc(1);
third_kernel = (ulong *)unix_boot_alloc(NUM_KERNEL_THIRD);
percpu_logout = (ulong*)unix_boot_alloc(1);
cons_pages = KSEG_TO_PHYS(unix_boot_mem) / PAGE_SIZE;
/* Set up the page tables */
bzero((char *)first, PAGE_SIZE);
bzero((char *)second, PAGE_SIZE);
bzero((char *)reservedFixup, PAGE_SIZE);
bzero((char *)third_rpb, HWRPB_PAGES * PAGE_SIZE);
bzero((char *)third_kernel, PAGE_SIZE * NUM_KERNEL_THIRD);
first[0] = KPTE(PFN(second));
first[1] = KPTE(PFN(first)); /* Region 3 */
/* Region 0 */
second[SECOND(0x10000000)] = KPTE(PFN(third_rpb));
for (i = 0; i < NUM_KERNEL_THIRD; i++) {
/* Region 1 */
second[SECOND(0x20000000) + i] = KPTE(PFN(third_kernel) + i);
}
/* Region 2 */
second[SECOND(0x40000000)] = KPTE(PFN(second));
/* For some obscure reason, Dec Unix's database read
* from /etc/sysconfigtab is written to this fixed
* mapped memory location. Go figure, since it is
* not initialized by the console. Maybe it is
* to look at the database from the console
* after a boot/crash.
*
* Black magic to estimate the max size. SEGVs on overflow
* bugnion
*/
#define DATABASE_BASE 0x20000000
#define DATABASE_END 0x20020000
ulong *dbPage = (ulong*)unix_boot_alloc(1);
bzero(dbPage, PAGE_SIZE);
second[SECOND(DATABASE_BASE)] = KPTE(PFN(dbPage));
for (i = DATABASE_BASE; i < DATABASE_END ; i += PAGE_SIZE) {
ulong *db = (ulong*)unix_boot_alloc(1);
dbPage[THIRD(i)] = KPTE(PFN(db));
}
/* Region 0 */
/* Map the HWRPB */
for (i = 0; i < HWRPB_PAGES; i++)
third_rpb[i] = KPTE(PFN(rpb) + i);
/* Map the MDT bitmap table */
for (i = 0; i < mdt_bitmap_pages; i++) {
third_rpb[HWRPB_PAGES + i] = KPTE(PFN(mdt_bitmap) + i);
}
/* Protect the PAL pages */
for (i = 1; i < PFN(first); i++)
third_rpb[HWRPB_PAGES + mdt_bitmap_pages + i] = KPTE(i);
/* Set up third_kernel after it's loaded, when we know where it is */
kern_first_page = (KSEG_TO_PHYS(m5Conf.kernStart)/PAGE_SIZE);
kernel_end = ROUNDUP8K(m5Conf.kernEnd);
bootadr = m5Conf.entryPoint;
printf_lock("HWRPB 0x%x l1pt 0x%x l2pt 0x%x l3pt_rpb 0x%x l3pt_kernel 0x%x"
" l2reserv 0x%x\n",
rpb, first, second, third_rpb, third_kernel, reservedFixup);
if (kernel_end - m5Conf.kernStart > (0x800000*NUM_KERNEL_THIRD)) {
printf_lock("Kernel is more than 8MB 0x%x - 0x%x = 0x%x\n",
kernel_end, m5Conf.kernStart,
kernel_end - m5Conf.kernStart );
panic("kernel too big\n");
}
printf_lock("kstart = 0x%x, kend = 0x%x, kentry = 0x%x, numCPUs = 0x%x\n", m5Conf.kernStart, m5Conf.kernEnd, m5Conf.entryPoint, m5Conf.numCPUs);
ksp_bottom = (ulong)unix_boot_alloc(1);
ksp_top = ksp_bottom + PAGE_SIZE;
ptr = (ulong) ksp_bottom;
bzero((char *)ptr, PAGE_SIZE);
dbPage[THIRD(KSTACK_REGION_VA)] = 0; /* Stack Guard Page */
dbPage[THIRD(KSTACK_REGION_VA + PAGE_SIZE)] = KPTE(PFN(ptr)); /* Kernel Stack Page */
dbPage[THIRD(KSTACK_REGION_VA + 2*PAGE_SIZE)] = 0; /* Stack Guard Page */
/* put argv into the bottom of the stack - argv starts at 1 because
* the command thatr got us here (i.e. "unixboot) is in argv[0].
*/
ksp = ksp_top - 8; /* Back up one longword */
ksp -= argc * sizeof(char *); /* Make room for argv */
kargv = (char **) ksp;
for (i = 1; i < argc; i++) { /* Copy arguments to stack */
ksp -= ((strlen(argv[i]) + 1) + 7) & ~0x7;
kargv[i-1] = (char *) ksp;
strcpy(kargv[i - 1], argv[i]);
}
kargc = i - 1;
kargv[kargc] = NULL; /* just to be sure; doesn't seem to be used */
ksp -= sizeof(char *); /* point above last arg for no real reason */
free_pfn = PFN(kernel_end);
bcopy((char *)&m5_rpb, (char *)rpb, sizeof(struct rpb));
rpb->rpb_selfref = (struct rpb *) KSEG_TO_PHYS(rpb);
rpb->rpb_string = 0x0000004250525748;
tbb = (ulong *) (((char *) rpb) + ROUNDUP8(sizeof(struct rpb)));
rpb->rpb_trans_off = (ulong)tbb - (ulong)rpb;
bcopy((char *)m5_tbb, (char *)tbb, sizeof(m5_tbb));
/*
* rpb_counter. Use to determine timeouts in OS.
* XXX must be patched after a checkpoint restore (I guess)
*/
printf_lock("CPU Clock at %d MHz IntrClockFrequency=%d \n",
m5Conf.cpuClock, m5Conf.intrClockFrequency);
rpb->rpb_counter = m5Conf.cpuClock * 1000 * 1000;
/*
* By definition, the rpb_clock is scaled by 4096 (in hz)
*/
rpb->rpb_clock = m5Conf.intrClockFrequency * 4096;
/*
* Per CPU Slots. Multiprocessor support.
*/
int percpu_size = ROUNDUP128(sizeof(struct rpb_percpu));
printf_lock("Booting with %d processor(s) \n", m5Conf.numCPUs);
rpb->rpb_numprocs = m5Conf.numCPUs;
rpb->rpb_slotsize = percpu_size;
rpb_percpu = (struct rpb_percpu *)
ROUNDUP128(((ulong)tbb) + (sizeof(m5_tbb)));
rpb->rpb_percpu_off = (ulong)rpb_percpu - (ulong)rpb;
for (i = 0; i < m5Conf.numCPUs; i++) {
struct rpb_percpu *thisCPU = (struct rpb_percpu*)
((ulong)rpb_percpu + percpu_size * i);
bzero((char *)thisCPU, percpu_size);
bcopy((char *)&m5_rpb_percpu, (char *)thisCPU,
sizeof(struct rpb_percpu));
thisCPU->rpb_pcb.rpb_ksp = (KSTACK_REGION_VA + 2*PAGE_SIZE - (ksp_top - ksp));
thisCPU->rpb_pcb.rpb_ptbr = PFN(first);
thisCPU->rpb_logout = KSEG_TO_PHYS(percpu_logout);
thisCPU->rpb_logout_len = PAGE_SIZE;
printf_lock("KSP: 0x%x PTBR 0x%x\n",
thisCPU->rpb_pcb.rpb_ksp, thisCPU->rpb_pcb.rpb_ptbr);
}
nextPtr = (ulong)rpb_percpu + percpu_size * m5Conf.numCPUs;
/*
* Console Terminal Block
*/
rpb_ctb = (struct rpb_ctb *) nextPtr;
ctb_tt = (struct ctb_tt*) rpb_ctb;
rpb->rpb_ctb_off = ((ulong)rpb_ctb) - (ulong)rpb;
rpb->rpb_ctb_size = sizeof(struct rpb_ctb);
bzero((char *)rpb_ctb, sizeof(struct ctb_tt));
rpb_ctb->rpb_type = CONS_DZ;
rpb_ctb->rpb_length = sizeof(ctb_tt) - sizeof(rpb_ctb);
/*
* uart initizliation
*/
ctb_tt->ctb_tintr_vec = 0x6c0; /* matches tlaser pal code */
ctb_tt->ctb_rintr_vec = 0x680; /* matches tlaser pal code */
ctb_tt->ctb_term_type = CTB_GRAPHICS;
rpb_crb = (struct rpb_crb *) (((ulong)rpb_ctb) + sizeof(struct ctb_tt));
rpb->rpb_crb_off = ((ulong)rpb_crb) - (ulong)rpb;
bzero((char *)rpb_crb, sizeof(struct rpb_crb));
/*
* console callback stuff (m5)
*/
rpb_crb->rpb_num = 1;
rpb_crb->rpb_mapped_pages = HWRPB_PAGES;
rpb_crb->rpb_map[0].rpb_virt = 0x10000000;
rpb_crb->rpb_map[0].rpb_phys = KSEG_TO_PHYS(((ulong)rpb) & ~0x1fff);
rpb_crb->rpb_map[0].rpb_pgcount = HWRPB_PAGES;
printf_lock("Console Callback at 0x%x, fixup at 0x%x, crb offset: 0x%x\n",
rpb_crb->rpb_va_disp, rpb_crb->rpb_va_fixup, rpb->rpb_crb_off);
rpb_mdt = (struct _m5_rpb_mdt *)((ulong)rpb_crb + sizeof(struct rpb_crb));
rpb->rpb_mdt_off = (ulong)rpb_mdt - (ulong)rpb;
bcopy((char *)&m5_rpb_mdt, (char *)rpb_mdt, sizeof(struct _m5_rpb_mdt));
cl = 0;
rpb_mdt->rpb_cluster[cl].rpb_pfncount = kern_first_page;
cl++;
rpb_mdt->rpb_cluster[cl].rpb_pfn = kern_first_page;
rpb_mdt->rpb_cluster[cl].rpb_pfncount = mem_pages - kern_first_page;
rpb_mdt->rpb_cluster[cl].rpb_pfntested =
rpb_mdt->rpb_cluster[cl].rpb_pfncount;
rpb_mdt->rpb_cluster[cl].rpb_pa = KSEG_TO_PHYS(mdt_bitmap);
rpb_mdt->rpb_cluster[cl].rpb_va = 0x10000000 + HWRPB_PAGES * PAGE_SIZE;
cl++;
rpb_mdt->rpb_numcl = cl;
for (i = 0; i < cl; i++)
printf_lock("Memory cluster %d [%d - %d]\n", i,
rpb_mdt->rpb_cluster[i].rpb_pfn,
rpb_mdt->rpb_cluster[i].rpb_pfncount);
/* Checksum the rpb for good luck */
sum = 0;
lp1 = (long *)&rpb_mdt->rpb_impaddr;
lp2 = (long *)&rpb_mdt->rpb_cluster[cl];
while (lp1 < lp2) sum += *lp1++;
rpb_mdt->rpb_checksum = sum;
/* XXX should checksum the cluster descriptors */
bzero((char *)mdt_bitmap, mdt_bitmap_pages * PAGE_SIZE);
for (i = 0; i < mem_pages/8; i++)
((unsigned char *)mdt_bitmap)[i] = 0xff;
printf_lock("Initalizing mdt_bitmap addr 0x%x mem_pages %x \n",
(long)mdt_bitmap,(long)mem_pages);
m5_rpb.rpb_config_off = 0;
m5_rpb.rpb_fru_off = 0;
rpb_dsr = (struct rpb_dsr *)((ulong)rpb_mdt + sizeof(struct _m5_rpb_mdt));
rpb->rpb_dsr_off = (ulong)rpb_dsr - (ulong)rpb;
bzero((char *)rpb_dsr, sizeof(struct rpb_dsr));
rpb_dsr->rpb_smm = 1578; /* Official XXM SMM number as per SRM */
rpb_dsr->rpb_smm = 1089; /* Official Alcor SMM number as per SRM */
rpb_lurt = (int *) ROUNDUP8((ulong)rpb_dsr + sizeof(struct rpb_dsr));
rpb_dsr->rpb_lurt_off = ((ulong) rpb_lurt) - (ulong) rpb_dsr;
bcopy((char *)m5_lurt, (char *)rpb_lurt, sizeof(m5_lurt));
rpb_name = (char *) ROUNDUP8(((ulong)rpb_lurt) + sizeof(m5_lurt));
rpb_dsr->rpb_sysname_off = ((ulong) rpb_name) - (ulong) rpb_dsr;
#define THENAME " M5/Alpha "
sum = sizeof(THENAME);
bcopy(THENAME, rpb_name, sum);
*(ulong *)rpb_name = sizeof(THENAME); /* put in length field */
/* calculate size of rpb */
rpb->rpb_size = ((ulong) &rpb_name[sum]) - (ulong)rpb;
if (rpb->rpb_size > PAGE_SIZE * HWRPB_PAGES) {
panic("HWRPB_PAGES=%d too small for HWRPB !!! \n");
}
ulong *rpbptr = (ulong*)((char*)rpb_dsr + sizeof(struct rpb_dsr));
rpb_crb->rpb_pa_disp = KSEG_TO_PHYS(rpbptr);
rpb_crb->rpb_va_disp = 0x10000000 +
(((ulong)rpbptr - (ulong)rpb) & (0x2000 * HWRPB_PAGES - 1));
printf_lock("ConsoleDispatch at virt %x phys %x val %x\n",
rpb_crb->rpb_va_disp, rpb_crb->rpb_pa_disp, consoleCallback);
*rpbptr++ = 0;
*rpbptr++ = (ulong) consoleCallback;
rpb_crb->rpb_pa_fixup = KSEG_TO_PHYS(rpbptr);
rpb_crb->rpb_va_fixup = 0x10000000 +
(((ulong)rpbptr - (ulong)rpb) & (0x2000 * HWRPB_PAGES - 1));
*rpbptr++ = 0;
*rpbptr++ = (ulong) consoleFixup;
/* Checksum the rpb for good luck */
sum = 0;
lp1 = (long *)rpb;
lp2 = &rpb->rpb_checksum;
while (lp1 < lp2)
sum += *lp1++;
*lp2 = sum;
/*
* MP bootstrap
*/
for (i = 1; i < m5Conf.numCPUs; i++) {
ulong stack = (ulong)unix_boot_alloc(1);
printf_lock("Bootstraping CPU %d with sp=0x%x\n", i, stack);
m5AlphaAccess->cpuStack[i] = stack;
}
/*
* Make sure that we are not stepping on the kernel
*/
if ((ulong)unix_boot_mem >= (ulong)m5Conf.kernStart) {
panic("CONSOLE: too much memory. Smashing kernel\n");
} else {
printf_lock("unix_boot_mem ends at %x \n", unix_boot_mem);
}
JToKern((char *)bootadr, (ulong)rpb_percpu, free_pfn, kargc, kargv, NULL);
}
void
JToKern(char *bootadr, ulong rpb_percpu, ulong free_pfn, ulong k_argc,
char **k_argv, char **envp)
{
extern ulong palJToKern[];
struct _kernel_params *kernel_params = (struct _kernel_params *) KSEG;
int i;
printf_lock("k_argc = %d ", k_argc);
for (i = 0; i < k_argc; i++) {
printf_lock("'%s' ", k_argv[i]);
}
printf_lock("\n");
kernel_params->bootadr = bootadr;
kernel_params->rpb_percpu = KSEG_TO_PHYS(rpb_percpu);
kernel_params->free_pfn = free_pfn;
kernel_params->argc = k_argc;
kernel_params->argv = (ulong)k_argv;
kernel_params->envp = (ulong)envp;
printf_lock("jumping to kernel at 0x%x, (PCBB 0x%x pfn %d)\n",
bootadr, rpb_percpu, free_pfn);
JToPal(KSEG_TO_PHYS(palJToKern));
printf_lock("returned from JToPal. Looping\n");
while (1)
continue;
}
void
JToPal(ulong bootadr)
{
cServe(bootadr, 0, CSERVE_K_JTOPAL);
/*
* Make sure that floating point is enabled incase
* it was disabled by the user program.
*/
wrfen(1);
}
int
strcpy(char *dst, char *src)
{
int i = 0;
while (*src) {
*dst++ = *src++;
i++;
}
return i;
}
/*
* Console I/O
*
*/
int numOpenDevices = 11;
struct {
char name[128];
} deviceState[32];
#define BOOTDEVICE_NAME "SCSI 1 0 0 1 100 0"
void
DeviceOperation(long op, long channel, long count, long address, long block)
{
long pAddr;
if (strcmp(deviceState[channel].name, BOOTDEVICE_NAME )) {
panic("DeviceRead: only implemented for root disk \n");
}
pAddr = KSEG_TO_PHYS(address);
if (pAddr + count > m5Conf.mem_size) {
panic("DeviceRead: request out of range \n");
}
m5AlphaAccess->diskCount = count;
m5AlphaAccess->diskPAddr = pAddr;
m5AlphaAccess->diskBlock = block;
m5AlphaAccess->diskOperation = op; /* launch */
}
/*
* M5 Console callbacks
*
*/
/* AXP manual 2-31 */
#define CONSCB_GETC 0x1
#define CONSCB_PUTS 0x2
#define CONSCB_RESET_TERM 0x3
#define CONSCB_SET_TERM_INT 0x4
#define CONSCB_SET_TERM_CTL 0x5
#define CONSCB_PROCESS_KEY 0x6
#define CONSCB_OPEN_CONSOLE 0x7
#define CONSCB_CLOSE_CONSOLE 0x8
#define CONSCB_OPEN 0x10
#define CONSCB_CLOSE 0x11
#define CONSCB_READ 0x13
#define CONSCB_GETENV 0x22
/* AXP manual 2-26 */
#define ENV_AUTO_ACTION 0X01
#define ENV_BOOT_DEV 0X02
#define ENV_BOOTDEF_DEV 0X03
#define ENV_BOOTED_DEV 0X04
#define ENV_BOOT_FILE 0X05
#define ENV_BOOTED_FILE 0X06
#define ENV_BOOT_OSFLAGS 0X07
#define ENV_BOOTED_OSFLAGS 0X08
#define ENV_BOOT_RESET 0X09
#define ENV_DUMP_DEV 0X0A
#define ENV_ENABLE_AUDIT 0X0B
#define ENV_LICENSE 0X0C
#define ENV_CHAR_SET 0X0D
#define ENV_LANGUAGE 0X0E
#define ENV_TTY_DEV 0X0F
#define ENV_SCSIID 0X42
#define ENV_SCSIFAST 0X43
#define ENV_COM1_BAUD 0X44
#define ENV_COM1_MODEM 0X45
#define ENV_COM1_FLOW 0X46
#define ENV_COM1_MISC 0X47
#define ENV_COM2_BAUD 0X48
#define ENV_COM2_MODEM 0X49
#define ENV_COM2_FLOW 0X4A
#define ENV_COM2_MISC 0X4B
#define ENV_PASSWORD 0X4C
#define ENV_SECURE 0X4D
#define ENV_LOGFAIL 0X4E
#define ENV_SRM2DEV_ID 0X4F
#define MAX_ENVLEN 32
char env_auto_action[MAX_ENVLEN] = "BOOT";
char env_boot_dev[MAX_ENVLEN] = "";
char env_bootdef_dev[MAX_ENVLEN] = "";
char env_booted_dev[MAX_ENVLEN] = BOOTDEVICE_NAME;
char env_boot_file[MAX_ENVLEN] = "";
char env_booted_file[MAX_ENVLEN] = "";
char env_boot_osflags[MAX_ENVLEN] = "";
char env_booted_osflags[MAX_ENVLEN] = "";
char env_boot_reset[MAX_ENVLEN] = "";
char env_dump_dev[MAX_ENVLEN] = "";
char env_enable_audit[MAX_ENVLEN] = "";
char env_license[MAX_ENVLEN] = "";
char env_char_set[MAX_ENVLEN] = "";
char env_language[MAX_ENVLEN] = "";
char env_tty_dev[MAX_ENVLEN] = "0";
char env_scsiid[MAX_ENVLEN] = "";
char env_scsifast[MAX_ENVLEN] = "";
char env_com1_baud[MAX_ENVLEN] = "";
char env_com1_modem[MAX_ENVLEN] = "";
char env_com1_flow[MAX_ENVLEN] = "";
char env_com1_misc[MAX_ENVLEN] = "";
char env_com2_baud[MAX_ENVLEN] = "";
char env_com2_modem[MAX_ENVLEN] = "";
char env_com2_flow[MAX_ENVLEN] = "";
char env_com2_misc[MAX_ENVLEN] = "";
char env_password[MAX_ENVLEN] = "";
char env_secure[MAX_ENVLEN] = "";
char env_logfail[MAX_ENVLEN] = "";
char env_srm2dev_id[MAX_ENVLEN] = "";
#define MAX_ENV_INDEX 100
char *envptr[MAX_ENV_INDEX] = {
0, /* 0x00 */
env_auto_action, /* 0x01 */
env_boot_dev, /* 0x02 */
env_bootdef_dev, /* 0x03 */
env_booted_dev, /* 0x04 */
env_boot_file, /* 0x05 */
env_booted_file, /* 0x06 */
env_boot_osflags, /* 0x07 */
env_booted_osflags, /* 0x08 */
env_boot_reset, /* 0x09 */
env_dump_dev, /* 0x0A */
env_enable_audit, /* 0x0B */
env_license, /* 0x0C */
env_char_set, /* 0x0D */
(char *)&env_language, /* 0x0E */
env_tty_dev, /* 0x0F */
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, /* 0x10 - 0x1F */
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, /* 0x20 - 0x2F */
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, /* 0x30 - 0x3F */
0, /* 0x40 */
0, /* 0x41 */
env_scsiid, /* 0x42 */
env_scsifast, /* 0x43 */
env_com1_baud, /* 0x44 */
env_com1_modem, /* 0x45 */
env_com1_flow, /* 0x46 */
env_com1_misc, /* 0x47 */
env_com2_baud, /* 0x48 */
env_com2_modem, /* 0x49 */
env_com2_flow, /* 0x4A */
env_com2_misc, /* 0x4B */
env_password, /* 0x4C */
env_secure, /* 0x4D */
env_logfail, /* 0x4E */
env_srm2dev_id, /* 0x4F */
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, /* 0x50 - 0x5F */
0, /* 0x60 */
0, /* 0x61 */
0, /* 0x62 */
0, /* 0x63 */
};
long
CallBackDispatcher(long a0, long a1, long a2, long a3, long a4)
{
long i;
switch (a0) {
case CONSCB_GETC:
return GetChar();
case CONSCB_PUTS:
for (i = 0; i < a3; i++)
PutChar(*((char *)a2 + i));
return a3;
case CONSCB_GETENV:
if (a1 >= 0 && a1 < MAX_ENV_INDEX && envptr[a1] != 0 && *envptr[a1]) {
i = strcpy((char*)a2, envptr[a1]);
} else {
strcpy((char*)a2, "");
i = (long)0xc000000000000000;
if (a1 >= 0 && a1 < MAX_ENV_INDEX)
printf_lock("GETENV unsupported option %d (0x%x)\n", a1, a1);
else
printf_lock("GETENV unsupported option %s\n", a1);
}
if (i > a3)
panic("CONSCB_GETENV overwrote buffer\n");
return i;
case CONSCB_OPEN:
bcopy((char*)a1, deviceState[numOpenDevices].name, a2);
deviceState[numOpenDevices].name[a2] = '\0';
printf_lock("CONSOLE OPEN : %s --> success \n",
deviceState[numOpenDevices].name);
return numOpenDevices++;
case CONSCB_READ:
DeviceOperation(a0, a1, a2, a3, a4);
break;
case CONSCB_CLOSE:
break;
case CONSCB_OPEN_CONSOLE:
printf_lock("CONSOLE OPEN\n");
return 0; /* success */
break; /* not reached */
case CONSCB_CLOSE_CONSOLE:
printf_lock("CONSOLE CLOSE\n");
return 0; /* success */
break; /* not reached */
default:
panic("CallBackDispatcher(%x,%x,%x,%x,%x)\n", a0, a1, a2, a3, a4);
}
return 0;
}
long
CallBackFixup(int a0, int a1, int a2)
{
long temp;
/*
* Linux uses r8 for the current pointer (pointer to data
* structure contating info about currently running process). It
* is set when the kernel starts and is expected to remain
* there... Problem is that the unlike the kernel, the console
* does not prevent the assembler from using r8. So here is a work
* around. So far this has only been a problem in CallBackFixup()
* but any other call back functions couldd cause a problem at
* some point
*/
/* save off the current pointer to a temp variable */
asm("bis $8, $31, %0" : "=r" (temp));
/* call original code */
printf_lock("CallbackFixup %x %x, t7=%x\n", a0, a1, temp);
/* restore the current pointer */
asm("bis %0, $31, $8" : : "r" (temp) : "$8");
return 0;
}
void
SlaveCmd(int cpu, struct rpb_percpu *my_rpb)
{
extern ulong palJToSlave[];
printf_lock("Slave CPU %d console command %s", cpu,
my_rpb->rpb_iccb.iccb_rxbuf);
my_rpb->rpb_state |= STATE_BIP;
my_rpb->rpb_state &= ~STATE_RC;
printf_lock("SlaveCmd: restart %x %x vptb %x my_rpb %x my_rpb_phys %x\n",
rpb->rpb_restart, rpb->rpb_restart_pv, rpb->rpb_vptb, my_rpb,
KSEG_TO_PHYS(my_rpb));
cServe(KSEG_TO_PHYS(palJToSlave), (ulong)rpb->rpb_restart,
CSERVE_K_JTOPAL, rpb->rpb_restart_pv, rpb->rpb_vptb,
KSEG_TO_PHYS(my_rpb));
panic("SlaveCmd returned \n");
}
void
SlaveLoop(int cpu)
{
int size = ROUNDUP128(sizeof(struct rpb_percpu));
struct rpb_percpu *my_rpb = (struct rpb_percpu*)
((ulong)rpb_percpu + size * cpu);
if (cpu == 0) {
panic("CPU 0 entering slaveLoop. Reenetering the console. HOSED\n");
} else {
printf_lock("Entering slaveloop for cpu %d my_rpb=%x\n", cpu, my_rpb);
}
// swap the processors context to the one in the
// rpb_percpu struct very carefully (i.e. no stack usage)
// so that linux knows which processor ends up in __smp_callin
// and we don't trash any data is the process
SlaveSpin(cpu, my_rpb, &my_rpb->rpb_iccb.iccb_rxlen);
}