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Diffstat (limited to 'system/alpha/console/console.c')
| -rw-r--r-- | system/alpha/console/console.c | 1074 |
1 files changed, 1074 insertions, 0 deletions
diff --git a/system/alpha/console/console.c b/system/alpha/console/console.c new file mode 100644 index 000000000..f57ce054f --- /dev/null +++ b/system/alpha/console/console.c @@ -0,0 +1,1074 @@ +/* + * 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); +} |