/*
* void sh_proc0_init(void):
* Setup proc0 u-area.
*/
void
sh_proc0_init(void)
{
struct switchframe *sf;
vaddr_t u;
/* Steal process0 u-area */
u = uvm_pageboot_alloc(USPACE);
memset((void *)u, 0, USPACE);
/* Setup uarea for lwp0 */
uvm_lwp_setuarea(&lwp0, u);
/*
* u-area map:
* |pcb| .... | .................. |
* | PAGE_SIZE | USPACE - PAGE_SIZE |
* frame bot stack bot
* current frame ... r6_bank
* stack bottom ... r7_bank
* current stack ... r15
*/
curpcb = lwp_getpcb(&lwp0);
lwp0.l_md.md_pcb = curpcb;
sf = &curpcb->pcb_sf;
#ifdef KSTACK_DEBUG
memset((char *)(u + sizeof(struct pcb)), 0x5a,
PAGE_SIZE - sizeof(struct pcb));
memset((char *)(u + PAGE_SIZE), 0xa5, USPACE - PAGE_SIZE);
memset(sf, 0xb4, sizeof(struct switchframe));
#endif /* KSTACK_DEBUG */
sf->sf_r6_bank = u + PAGE_SIZE;
sf->sf_r7_bank = sf->sf_r15 = u + USPACE;
__asm volatile("ldc %0, r6_bank" :: "r"(sf->sf_r6_bank));
__asm volatile("ldc %0, r7_bank" :: "r"(sf->sf_r7_bank));
lwp0.l_md.md_regs = (struct trapframe *)sf->sf_r6_bank - 1;
}
/*
* void sh_proc0_init(void):
* Setup proc0 u-area.
*/
void
sh_proc0_init()
{
struct switchframe *sf;
vaddr_t u;
/* Steal process0 u-area */
u = uvm_pageboot_alloc(USPACE);
memset((void *)u, 0, USPACE);
/* Setup proc0 */
proc0paddr = (struct user *)u;
proc0.p_addr = proc0paddr;
/*
* u-area map:
* |user| .... | .................. |
* | PAGE_SIZE | USPACE - PAGE_SIZE |
* frame top stack top
* current frame ... r6_bank
* stack top ... r7_bank
* current stack ... r15
*/
curpcb = proc0.p_md.md_pcb = &proc0.p_addr->u_pcb;
curupte = proc0.p_md.md_upte;
sf = &curpcb->pcb_sf;
sf->sf_r6_bank = u + PAGE_SIZE;
sf->sf_r7_bank = sf->sf_r15 = u + USPACE;
__asm volatile("ldc %0, r6_bank" :: "r"(sf->sf_r6_bank));
__asm volatile("ldc %0, r7_bank" :: "r"(sf->sf_r7_bank));
proc0.p_md.md_regs = (struct trapframe *)sf->sf_r6_bank - 1;
#ifdef KSTACK_DEBUG
memset((char *)(u + sizeof(struct user)), 0x5a,
PAGE_SIZE - sizeof(struct user));
memset((char *)(u + PAGE_SIZE), 0xa5, USPACE - PAGE_SIZE);
#endif /* KSTACK_DEBUG */
}
/*
* Do all the stuff that locore normally does before calling main().
*/
void
mach_init()
{
extern char kernel_text[], edata[], end[];
extern struct user *proc0paddr;
caddr_t kernend, v;
paddr_t start;
size_t size;
/*
* Clear the BSS segment.
*/
kernend = (caddr_t)mips_round_page(end);
memset(edata, 0, kernend - edata);
/* disable all interrupt */
interrupt_init_bootstrap();
/* enable SIF BIOS */
sifbios_init();
consinit();
printf("kernel_text=%p edata=%p end=%p\n", kernel_text, edata, end);
#ifdef DEBUG
bootinfo_dump();
#endif
uvm_setpagesize();
physmem = atop(PS2_MEMORY_SIZE);
/*
* Copy exception-dispatch code down to exception vector.
* Initialize locore-function vector.
* Clear out the I and D caches.
*/
mips_vector_init();
/*
* Load the rest of the available pages into the VM system.
*/
start = (paddr_t)round_page(MIPS_KSEG0_TO_PHYS(kernend));
size = PS2_MEMORY_SIZE - start - BOOTINFO_BLOCK_SIZE;
memset((void *)MIPS_PHYS_TO_KSEG1(start), 0, size);
/* kernel itself */
mem_clusters[0].start = trunc_page(MIPS_KSEG0_TO_PHYS(kernel_text));
mem_clusters[0].size = start - mem_clusters[0].start;
/* heap */
mem_clusters[1].start = start;
mem_clusters[1].size = size;
/* load */
printf("load memory %#lx, %#x\n", start, size);
uvm_page_physload(atop(start), atop(start + size),
atop(start), atop(start + size), VM_FREELIST_DEFAULT);
/*
* Initialize error message buffer (at end of core).
*/
mips_init_msgbuf();
/*
* Compute the size of system data structures. pmap_bootstrap()
* needs some of this information.
*/
size = (vsize_t)allocsys(NULL, NULL);
pmap_bootstrap();
/*
* Allocate space for proc0's USPACE.
*/
v = (caddr_t)uvm_pageboot_alloc(USPACE);
proc0.p_addr = proc0paddr = (struct user *)v;
proc0.p_md.md_regs = (struct frame *)(v + USPACE) - 1;
curpcb = &proc0.p_addr->u_pcb;
curpcb->pcb_context[11] = PSL_LOWIPL; /* SR */
#ifdef IPL_ICU_MASK
curpcb->pcb_ppl = 0;
#endif
/*
* Allocate space for system data structures. These data structures
* are allocated here instead of cpu_startup() because physical
* memory is directly addressable. We don't have to map these into
* virtual address space.
*/
v = (caddr_t)uvm_pageboot_alloc(size);
if ((allocsys(v, NULL) - v) != size)
panic("mach_init: table size inconsistency");
}
void
mach_init(int argc, char **argv, yamon_env_var *envp, u_long memsize)
{
bus_space_handle_t sh;
void *kernend;
const char *cp;
u_long first, last;
void *v;
int freqok, howto, i;
const struct alchemy_board *board;
extern char edata[], end[]; /* XXX */
board = board_info();
KASSERT(board != NULL);
/* clear the BSS segment */
kernend = (void *)mips_round_page(end);
memset(edata, 0, (char *)kernend - edata);
/* set CPU model info for sysctl_hw */
strcpy(cpu_model, board->ab_name);
/* save the yamon environment pointer */
yamon_envp = envp;
/* Use YAMON callbacks for early console I/O */
cn_tab = &yamon_promcd;
/*
* Set up the exception vectors and CPU-specific function
* vectors early on. We need the wbflush() vector set up
* before comcnattach() is called (or at least before the
* first printf() after that is called).
* Sets up mips_cpu_flags that may be queried by other
* functions called during startup.
* Also clears the I+D caches.
*/
mips_vector_init();
/*
* Set the VM page size.
*/
uvm_setpagesize();
/*
* Use YAMON's CPU frequency if available.
*/
freqok = yamon_setcpufreq(1);
/*
* Initialize bus space tags.
*/
au_cpureg_bus_mem_init(&alchemy_cpuregt, &alchemy_cpuregt);
aubus_st = &alchemy_cpuregt;
/*
* Calibrate the timer if YAMON failed to tell us.
*/
if (!freqok) {
bus_space_map(aubus_st, PC_BASE, PC_SIZE, 0, &sh);
au_cal_timers(aubus_st, sh);
bus_space_unmap(aubus_st, sh, PC_SIZE);
}
/*
* Perform board-specific initialization.
*/
board->ab_init();
/*
* Bring up the console.
*/
#if NCOM > 0
#ifdef CONSPEED
if (aucomcnrate == 0)
aucomcnrate = CONSPEED;
#else /* !CONSPEED */
/*
* Learn default console speed. We use the YAMON environment,
* though we could probably also figure it out by checking the
* aucom registers directly.
*/
if ((aucomcnrate == 0) && ((cp = yamon_getenv("modetty0")) != NULL))
aucomcnrate = strtoul(cp, NULL, 0);
if (aucomcnrate == 0) {
printf("FATAL: `modetty0' YAMON variable not set. Set it\n");
printf(" to the speed of the console and try again.\n");
printf(" Or, build a kernel with the `CONSPEED' "
"option.\n");
panic("mach_init");
}
#endif /* CONSPEED */
/*
* Delay to allow firmware putchars to complete.
* FIFO depth * character time.
* character time = (1000000 / (defaultrate / 10))
*/
delay(160000000 / aucomcnrate);
if (com_aubus_cnattach(UART0_BASE, aucomcnrate) != 0)
panic("mach_init: unable to initialize serial console");
#else /* NCOM > 0 */
panic("mach_init: not configured to use serial console");
#endif /* NAUCOM > 0 */
/*
* Look at arguments passed to us and compute boothowto.
*/
boothowto = RB_AUTOBOOT;
#ifdef KADB
boothowto |= RB_KDB;
#endif
for (i = 1; i < argc; i++) {
for (cp = argv[i]; *cp; cp++) {
/* Ignore superfluous '-', if there is one */
if (*cp == '-')
continue;
howto = 0;
BOOT_FLAG(*cp, howto);
if (! howto)
printf("bootflag '%c' not recognised\n", *cp);
else
boothowto |= howto;
}
}
/*
* Determine the memory size. Use the `memsize' PMON
* variable. If that's not available, panic.
*
* Note: Reserve the first page! That's where the trap
* vectors are located.
*/
#if defined(MEMSIZE)
memsize = MEMSIZE;
#else
if (memsize == 0) {
if ((cp = yamon_getenv("memsize")) != NULL)
memsize = strtoul(cp, NULL, 0);
else {
printf("FATAL: `memsize' YAMON variable not set. Set it to\n");
printf(" the amount of memory (in MB) and try again.\n");
printf(" Or, build a kernel with the `MEMSIZE' "
"option.\n");
panic("mach_init");
}
}
#endif /* MEMSIZE */
printf("Memory size: 0x%08lx\n", memsize);
physmem = btoc(memsize);
mem_clusters[mem_cluster_cnt].start = PAGE_SIZE;
mem_clusters[mem_cluster_cnt].size =
memsize - mem_clusters[mem_cluster_cnt].start;
mem_cluster_cnt++;
/*
* Load the rest of the available pages into the VM system.
*/
first = round_page(MIPS_KSEG0_TO_PHYS(kernend));
last = mem_clusters[0].start + mem_clusters[0].size;
uvm_page_physload(atop(first), atop(last), atop(first), atop(last),
VM_FREELIST_DEFAULT);
/*
* Initialize message buffer (at end of core).
*/
mips_init_msgbuf();
/*
* Initialize the virtual memory system.
*/
pmap_bootstrap();
/*
* Init mapping for u page(s) for proc0.
*/
v = (void *) uvm_pageboot_alloc(USPACE);
lwp0.l_addr = proc0paddr = (struct user *)v;
lwp0.l_md.md_regs = (struct frame *)((char *)v + USPACE) - 1;
proc0paddr->u_pcb.pcb_context[11] =
MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */
/*
* Initialize debuggers, and break into them, if appropriate.
*/
#if NKSYMS || defined(DDB) || defined(LKM)
ksyms_init(0, 0, 0);
#endif
#ifdef DDB
if (boothowto & RB_KDB)
Debugger();
#endif
}
/*
* Do all the stuff that locore normally does before calling main().
*/
void
mach_init(int argc, char **argv, yamon_env_var *envp, u_long memsize)
{
struct malta_config *mcp = &malta_configuration;
bus_space_handle_t sh;
caddr_t kernend, v;
u_long first, last;
vsize_t size;
char *cp;
int i, howto;
uint8_t *brkres = (uint8_t *)MIPS_PHYS_TO_KSEG1(MALTA_BRKRES);
extern char edata[], end[];
*brkres = 0; /* Disable BREAK==reset on console */
/* Get the propaganda in early! */
led_display_str("NetBSD");
/*
* Clear the BSS segment.
*/
kernend = (caddr_t)mips_round_page(end);
memset(edata, 0, kernend - edata);
/* save the yamon environment pointer */
yamon_envp = envp;
/* Use YAMON callbacks for early console I/O */
cn_tab = &yamon_promcd;
/*
* Set up the exception vectors and cpu-specific function
* vectors early on. We need the wbflush() vector set up
* before comcnattach() is called (or at least before the
* first printf() after that is called).
* Also clears the I+D caches.
*/
mips_vector_init();
uvm_setpagesize();
physmem = btoc(memsize);
gt_pci_init(&mcp->mc_pc, &mcp->mc_gt);
malta_bus_io_init(&mcp->mc_iot, mcp);
malta_bus_mem_init(&mcp->mc_memt, mcp);
malta_dma_init(mcp);
/*
* Calibrate the timer, delay() relies on this.
*/
bus_space_map(&mcp->mc_iot, MALTA_RTCADR, 2, 0, &sh);
malta_cal_timer(&mcp->mc_iot, sh);
bus_space_unmap(&mcp->mc_iot, sh, 2);
#if NCOM > 0
/*
* Delay to allow firmware putchars to complete.
* FIFO depth * character time.
* character time = (1000000 / (defaultrate / 10))
*/
delay(160000000 / comcnrate);
if (comcnattach(&mcp->mc_iot, MALTA_UART0ADR, comcnrate, COM_FREQ,
(TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0)
panic("malta: unable to initialize serial console");
#else
panic("malta: not configured to use serial console");
#endif /* NCOM > 0 */
consinit();
mem_clusters[0].start = 0;
mem_clusters[0].size = ctob(physmem);
mem_cluster_cnt = 1;
/*
* XXX: check argv[0] - do something if "gdb"???
*/
/*
* Look at arguments passed to us and compute boothowto.
*/
boothowto = RB_AUTOBOOT;
for (i = 1; i < argc; i++) {
for (cp = argv[i]; *cp; cp++) {
/* Ignore superfluous '-', if there is one */
if (*cp == '-')
continue;
howto = 0;
BOOT_FLAG(*cp, howto);
if (! howto)
printf("bootflag '%c' not recognised\n", *cp);
else
boothowto |= howto;
}
}
/*
* Load the rest of the available pages into the VM system.
*/
first = round_page(MIPS_KSEG0_TO_PHYS(kernend));
last = mem_clusters[0].start + mem_clusters[0].size;
uvm_page_physload(atop(first), atop(last), atop(first), atop(last),
VM_FREELIST_DEFAULT);
/*
* Initialize error message buffer (at end of core).
*/
mips_init_msgbuf();
/*
* Compute the size of system data structures. pmap_bootstrap()
* needs some of this information.
*/
size = (vsize_t)allocsys(NULL, NULL);
pmap_bootstrap();
/*
* Allocate space for proc0's USPACE.
*/
v = (caddr_t)uvm_pageboot_alloc(USPACE);
proc0.p_addr = proc0paddr = (struct user *)v;
proc0.p_md.md_regs = (struct frame *)(v + USPACE) - 1;
curpcb = &proc0.p_addr->u_pcb;
curpcb->pcb_context[11] = MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */
/*
* Allocate space for system data structures. These data structures
* are allocated here instead of cpu_startup() because physical
* memory is directly addressable. We don't have to map these into
* virtual address space.
*/
v = (caddr_t)uvm_pageboot_alloc(size);
if ((allocsys(v, NULL) - v) != size)
panic("mach_init: table size inconsistency");
/*
* Initialize debuggers, and break into them, if appropriate.
*/
#ifdef DDB
ddb_init(0, 0, 0);
#endif
if (boothowto & RB_KDB)
#if defined(DDB)
Debugger();
#endif
}