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Diffstat (limited to 'post/cpu/ppc4xx/spr.c')
| -rw-r--r-- | post/cpu/ppc4xx/spr.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/post/cpu/ppc4xx/spr.c b/post/cpu/ppc4xx/spr.c new file mode 100644 index 0000000..3e74634 --- /dev/null +++ b/post/cpu/ppc4xx/spr.c @@ -0,0 +1,182 @@ +/* + * (C) Copyright 2007 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Author: Igor Lisitsin <igor@emcraft.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> + +/* + * SPR test + * + * The test checks the contents of Special Purpose Registers (SPR) listed + * in the spr_test_list array below. + * Each SPR value is read using mfspr instruction, some bits are masked + * according to the table and the resulting value is compared to the + * corresponding table value. + */ + +#ifdef CONFIG_POST + +#include <post.h> + +#if CONFIG_POST & CFG_POST_SPR + +#include <asm/processor.h> + +static struct { + int number; + char * name; + unsigned long mask; + unsigned long value; +} spr_test_list [] = { + /* Standard Special-Purpose Registers */ + + {0x001, "XER", 0x00000000, 0x00000000}, + {0x008, "LR", 0x00000000, 0x00000000}, + {0x009, "CTR", 0x00000000, 0x00000000}, + {0x016, "DEC", 0x00000000, 0x00000000}, + {0x01a, "SRR0", 0x00000000, 0x00000000}, + {0x01b, "SRR1", 0x00000000, 0x00000000}, + {0x110, "SPRG0", 0x00000000, 0x00000000}, + {0x111, "SPRG1", 0x00000000, 0x00000000}, + {0x112, "SPRG2", 0x00000000, 0x00000000}, + {0x113, "SPRG3", 0x00000000, 0x00000000}, + {0x11f, "PVR", 0x00000000, 0x00000000}, + + /* Additional Special-Purpose Registers. + * The values must match the initialization + * values from cpu/ppc4xx/start.S + */ + {0x30, "PID", 0x00000000, 0x00000000}, + {0x3a, "CSRR0", 0x00000000, 0x00000000}, + {0x3b, "CSRR1", 0x00000000, 0x00000000}, + {0x3d, "DEAR", 0x00000000, 0x00000000}, + {0x3e, "ESR", 0x00000000, 0x00000000}, + {0x3f, "IVPR", 0xffff0000, 0x00000000}, + {0x100, "USPRG0", 0x00000000, 0x00000000}, + {0x104, "SPRG4", 0x00000000, 0x00000000}, + {0x105, "SPRG5", 0x00000000, 0x00000000}, + {0x106, "SPRG6", 0x00000000, 0x00000000}, + {0x107, "SPRG7", 0x00000000, 0x00000000}, + {0x10c, "TBL", 0x00000000, 0x00000000}, + {0x10d, "TBU", 0x00000000, 0x00000000}, + {0x11e, "PIR", 0x0000000f, 0x00000000}, + {0x130, "DBSR", 0x00000000, 0x00000000}, + {0x134, "DBCR0", 0x00000000, 0x00000000}, + {0x135, "DBCR1", 0x00000000, 0x00000000}, + {0x136, "DBCR2", 0x00000000, 0x00000000}, + {0x138, "IAC1", 0x00000000, 0x00000000}, + {0x139, "IAC2", 0x00000000, 0x00000000}, + {0x13a, "IAC3", 0x00000000, 0x00000000}, + {0x13b, "IAC4", 0x00000000, 0x00000000}, + {0x13c, "DAC1", 0x00000000, 0x00000000}, + {0x13d, "DAC2", 0x00000000, 0x00000000}, + {0x13e, "DVC1", 0x00000000, 0x00000000}, + {0x13f, "DVC2", 0x00000000, 0x00000000}, + {0x150, "TSR", 0x00000000, 0x00000000}, + {0x154, "TCR", 0x00000000, 0x00000000}, + {0x190, "IVOR0", 0x0000fff0, 0x00000100}, + {0x191, "IVOR1", 0x0000fff0, 0x00000200}, + {0x192, "IVOR2", 0x0000fff0, 0x00000300}, + {0x193, "IVOR3", 0x0000fff0, 0x00000400}, + {0x194, "IVOR4", 0x0000fff0, 0x00000500}, + {0x195, "IVOR5", 0x0000fff0, 0x00000600}, + {0x196, "IVOR6", 0x0000fff0, 0x00000700}, + {0x197, "IVOR7", 0x0000fff0, 0x00000800}, + {0x198, "IVOR8", 0x0000fff0, 0x00000c00}, + {0x199, "IVOR9", 0x00000000, 0x00000000}, + {0x19a, "IVOR10", 0x0000fff0, 0x00000900}, + {0x19b, "IVOR11", 0x00000000, 0x00000000}, + {0x19c, "IVOR12", 0x00000000, 0x00000000}, + {0x19d, "IVOR13", 0x0000fff0, 0x00001300}, + {0x19e, "IVOR14", 0x0000fff0, 0x00001400}, + {0x19f, "IVOR15", 0x0000fff0, 0x00002000}, + {0x23a, "MCSRR0", 0x00000000, 0x00000000}, + {0x23b, "MCSRR1", 0x00000000, 0x00000000}, + {0x23c, "MCSR", 0x00000000, 0x00000000}, + {0x370, "INV0", 0x00000000, 0x00000000}, + {0x371, "INV1", 0x00000000, 0x00000000}, + {0x372, "INV2", 0x00000000, 0x00000000}, + {0x373, "INV3", 0x00000000, 0x00000000}, + {0x374, "ITV0", 0x00000000, 0x00000000}, + {0x375, "ITV1", 0x00000000, 0x00000000}, + {0x376, "ITV2", 0x00000000, 0x00000000}, + {0x377, "ITV3", 0x00000000, 0x00000000}, + {0x378, "CCR1", 0x00000000, 0x00000000}, + {0x390, "DNV0", 0x00000000, 0x00000000}, + {0x391, "DNV1", 0x00000000, 0x00000000}, + {0x392, "DNV2", 0x00000000, 0x00000000}, + {0x393, "DNV3", 0x00000000, 0x00000000}, + {0x394, "DTV0", 0x00000000, 0x00000000}, + {0x395, "DTV1", 0x00000000, 0x00000000}, + {0x396, "DTV2", 0x00000000, 0x00000000}, + {0x397, "DTV3", 0x00000000, 0x00000000}, + {0x398, "DVLIM", 0x0fc1f83f, 0x0001f800}, + {0x399, "IVLIM", 0x0fc1f83f, 0x0001f800}, + {0x39b, "RSTCFG", 0x00000000, 0x00000000}, + {0x39c, "DCDBTRL", 0x00000000, 0x00000000}, + {0x39d, "DCDBTRH", 0x00000000, 0x00000000}, + {0x39e, "ICDBTRL", 0x00000000, 0x00000000}, + {0x39f, "ICDBTRH", 0x00000000, 0x00000000}, + {0x3b2, "MMUCR", 0x00000000, 0x00000000}, + {0x3b3, "CCR0", 0x00000000, 0x00000000}, + {0x3d3, "ICDBDR", 0x00000000, 0x00000000}, + {0x3f3, "DBDR", 0x00000000, 0x00000000}, +}; + +static int spr_test_list_size = + sizeof (spr_test_list) / sizeof (spr_test_list[0]); + +int spr_post_test (int flags) +{ + int ret = 0; + int i; + + unsigned long code[] = { + 0x7c6002a6, /* mfspr r3,SPR */ + 0x4e800020 /* blr */ + }; + unsigned long (*get_spr) (void) = (void *) code; + + for (i = 0; i < spr_test_list_size; i++) { + int num = spr_test_list[i].number; + + /* mfspr r3,num */ + code[0] = 0x7c6002a6 | ((num & 0x1F) << 16) | ((num & 0x3E0) << 6); + + asm volatile ("isync"); + + if ((get_spr () & spr_test_list[i].mask) != + (spr_test_list[i].value & spr_test_list[i].mask)) { + post_log ("The value of %s special register " + "is incorrect: 0x%08X\n", + spr_test_list[i].name, get_spr ()); + ret = -1; + } + } + + return ret; +} + +#endif /* CONFIG_POST & CFG_POST_SPR */ +#endif /* CONFIG_POST */ |