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- /*
- * (C) Copyright 2002
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
- #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.
- */
- #include <post.h>
- #if CONFIG_POST & CONFIG_SYS_POST_SPR
- static struct
- {
- int number;
- char * name;
- unsigned long mask;
- unsigned long value;
- } spr_test_list [] = {
- /* Standard Special-Purpose Registers */
- {1, "XER", 0x00000000, 0x00000000},
- {8, "LR", 0x00000000, 0x00000000},
- {9, "CTR", 0x00000000, 0x00000000},
- {18, "DSISR", 0x00000000, 0x00000000},
- {19, "DAR", 0x00000000, 0x00000000},
- {22, "DEC", 0x00000000, 0x00000000},
- {26, "SRR0", 0x00000000, 0x00000000},
- {27, "SRR1", 0x00000000, 0x00000000},
- {272, "SPRG0", 0x00000000, 0x00000000},
- {273, "SPRG1", 0x00000000, 0x00000000},
- {274, "SPRG2", 0x00000000, 0x00000000},
- {275, "SPRG3", 0x00000000, 0x00000000},
- {287, "PVR", 0xFFFF0000, 0x00500000},
- /* Additional Special-Purpose Registers */
- {144, "CMPA", 0x00000000, 0x00000000},
- {145, "CMPB", 0x00000000, 0x00000000},
- {146, "CMPC", 0x00000000, 0x00000000},
- {147, "CMPD", 0x00000000, 0x00000000},
- {148, "ICR", 0xFFFFFFFF, 0x00000000},
- {149, "DER", 0x00000000, 0x00000000},
- {150, "COUNTA", 0xFFFFFFFF, 0x00000000},
- {151, "COUNTB", 0xFFFFFFFF, 0x00000000},
- {152, "CMPE", 0x00000000, 0x00000000},
- {153, "CMPF", 0x00000000, 0x00000000},
- {154, "CMPG", 0x00000000, 0x00000000},
- {155, "CMPH", 0x00000000, 0x00000000},
- {156, "LCTRL1", 0xFFFFFFFF, 0x00000000},
- {157, "LCTRL2", 0xFFFFFFFF, 0x00000000},
- {158, "ICTRL", 0xFFFFFFFF, 0x00000007},
- {159, "BAR", 0x00000000, 0x00000000},
- {630, "DPDR", 0x00000000, 0x00000000},
- {631, "DPIR", 0x00000000, 0x00000000},
- {638, "IMMR", 0xFFFF0000, CONFIG_SYS_IMMR },
- {560, "IC_CST", 0x8E380000, 0x00000000},
- {561, "IC_ADR", 0x00000000, 0x00000000},
- {562, "IC_DAT", 0x00000000, 0x00000000},
- {568, "DC_CST", 0xEF380000, 0x00000000},
- {569, "DC_ADR", 0x00000000, 0x00000000},
- {570, "DC_DAT", 0x00000000, 0x00000000},
- {784, "MI_CTR", 0xFFFFFFFF, 0x00000000},
- {786, "MI_AP", 0x00000000, 0x00000000},
- {787, "MI_EPN", 0x00000000, 0x00000000},
- {789, "MI_TWC", 0xFFFFFE02, 0x00000000},
- {790, "MI_RPN", 0x00000000, 0x00000000},
- {816, "MI_DBCAM", 0x00000000, 0x00000000},
- {817, "MI_DBRAM0", 0x00000000, 0x00000000},
- {818, "MI_DBRAM1", 0x00000000, 0x00000000},
- {792, "MD_CTR", 0xFFFFFFFF, 0x04000000},
- {793, "M_CASID", 0xFFFFFFF0, 0x00000000},
- {794, "MD_AP", 0x00000000, 0x00000000},
- {795, "MD_EPN", 0x00000000, 0x00000000},
- {796, "M_TWB", 0x00000003, 0x00000000},
- {797, "MD_TWC", 0x00000003, 0x00000000},
- {798, "MD_RPN", 0x00000000, 0x00000000},
- {799, "M_TW", 0x00000000, 0x00000000},
- {824, "MD_DBCAM", 0x00000000, 0x00000000},
- {825, "MD_DBRAM0", 0x00000000, 0x00000000},
- {826, "MD_DBRAM1", 0x00000000, 0x00000000},
- };
- static int spr_test_list_size = ARRAY_SIZE(spr_test_list);
- int spr_post_test (int flags)
- {
- int ret = 0;
- int ic = icache_status ();
- int i;
- unsigned long code[] = {
- 0x7c6002a6, /* mfspr r3,SPR */
- 0x4e800020 /* blr */
- };
- unsigned long (*get_spr) (void) = (void *) code;
- if (ic)
- icache_disable ();
- 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);
- 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;
- }
- }
- if (ic)
- icache_enable ();
- return ret;
- }
- #endif /* CONFIG_POST & CONFIG_SYS_POST_SPR */
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