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Diffstat (limited to 'arch/ia64/sn/fprom/main.c')
-rw-r--r-- | arch/ia64/sn/fprom/main.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/arch/ia64/sn/fprom/main.c b/arch/ia64/sn/fprom/main.c new file mode 100644 index 000000000..45632c2ce --- /dev/null +++ b/arch/ia64/sn/fprom/main.c @@ -0,0 +1,110 @@ +/* + * + * 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) 2000 Silicon Graphics, Inc. + * Copyright (C) 2000 by Jack Steiner (steiner@sgi.com) + */ + + + +#include <linux/types.h> +#include <asm/bitops.h> + +void bedrock_init(int); +void synergy_init(int, int); +void sys_fw_init (const char *args, int arglen, int bsp); + +volatile int bootmaster=0; /* Used to pick bootmaster */ +volatile int nasidmaster[128]={0}; /* Used to pick node/synergy masters */ +int init_done=0; +extern int bsp_lid; + +#define get_bit(b,p) (((*p)>>(b))&1) + +int +fmain(int lid, int bsp) { + int syn, nasid, cpu; + + /* + * First lets figure out who we are. This is done from the + * LID passed to us. + */ + nasid = (lid>>24); + syn = (lid>>17)&1; + cpu = (lid>>16)&1; + + /* + * Now pick a synergy master to initialize synergy registers. + */ + if (test_and_set_bit(syn, &nasidmaster[nasid]) == 0) { + synergy_init(nasid, syn); + test_and_set_bit(syn+2, &nasidmaster[nasid]); + } else + while (get_bit(syn+2, &nasidmaster[nasid]) == 0); + + /* + * Now pick a nasid master to initialize Bedrock registers. + */ + if (test_and_set_bit(8, &nasidmaster[nasid]) == 0) { + bedrock_init(nasid); + test_and_set_bit(9, &nasidmaster[nasid]); + } else + while (get_bit(9, &nasidmaster[nasid]) == 0); + + + /* + * Now pick a BSP & finish init. + */ + if (test_and_set_bit(0, &bootmaster) == 0) { + sys_fw_init(0, 0, bsp); + test_and_set_bit(1, &bootmaster); + } else + while (get_bit(1, &bootmaster) == 0); + + return (lid == bsp_lid); +} + + +void +bedrock_init(int nasid) +{ + nasid = nasid; /* to quiet gcc */ +} + + +void +synergy_init(int nasid, int syn) +{ + long *base; + long off; + + /* + * Enable all FSB flashed interrupts. + * ZZZ - I'd really like defines for this...... + */ + base = (long*)0x80000e0000000000LL; /* base of synergy regs */ + for (off = 0x2a0; off < 0x2e0; off+=8) /* offset for VEC_MASK_{0-3}_A/B */ + *(base+off/8) = -1LL; + + /* + * Set the NASID in the FSB_CONFIG register. + */ + base = (long*)0x80000e0000000450LL; + *base = (long)((nasid<<16)|(syn<<9)); +} + + +/* Why isnt there a bcopy/memcpy in lib64.a */ + +void* +memcpy(void * dest, const void *src, size_t count) +{ + char *s, *se, *d; + + for(d=dest, s=(char*)src, se=s+count; s<se; s++, d++) + *d = *s; + return dest; +} |