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review.coreboot.org / coreboot / 037c25d4dd8dda28da64af1e29e787fb8b55c84b / . / src / soc / intel / quark / spi_debug.c
blob: a6b5e692ec113264085767e8429ebd008bc7eac3 [file] [log] [blame]
Angel Pons230e4f9d2020-04-05 15:47:14 +0200[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-only */
Lee Leahyd9351092017-05-24 13:23:26 -0700[diff] [blame]2
Lee Leahyd9351092017-05-24 13:23:26 -0700[diff] [blame]3#include <console/console.h>
4#include <soc/spi.h>
5
6const char *spi_opcode_name(int opcode)
7{
8 const char *op_name;
9
10 switch (opcode) {
11 default:
12 op_name = "Unknown";
13 break;
14 case 1:
15 op_name = "Write Status";
16 break;
17 case 2:
18 op_name = "Page Program";
19 break;
20 case 3:
21 op_name = "Read Data";
22 break;
23 case 5:
24 op_name = "Read Status";
25 break;
26 case 6:
27 op_name = "Write Data Enable";
28 break;
29 case 0x0b:
30 op_name = "Fast Read";
31 break;
32 case 0x20:
33 op_name = "Erase 4 KiB";
34 break;
35 case 0x50:
36 op_name = "Write Status Enable";
37 break;
38 case 0x9f:
39 op_name = "Read ID";
40 break;
41 case 0xd8:
42 op_name = "Erase 64 KiB";
43 break;
44 }
45 return op_name;
46}
47
48void spi_display(volatile struct flash_ctrlr *ctrlr)
49{
50 int index;
51 int opcode;
52 const char *op_name;
53 int prefix;
54 int status;
55 int type;
56
57 /* Display the prefixes */
58 printk(BIOS_DEBUG, "Prefix Table\n");
59 for (index = 0; index < 2; index++) {
60 prefix = ctrlr->prefix[index];
61 op_name = spi_opcode_name(prefix);
62 printk(BIOS_DEBUG, " %d: 0x%02x (%s)\n", index, prefix,
63 op_name);
64 }
65
66 /* Display the opcodes */
67 printk(BIOS_DEBUG, "Opcode Menu\n");
68 for (index = 0; index < 8; index++) {
69 opcode = ctrlr->opmenu[index];
70 type = (ctrlr->type >> (index << 1)) & 3;
71 op_name = spi_opcode_name(opcode);
72 printk(BIOS_DEBUG, " %d: 0x%02x (%s), %s%s\n", index, opcode,
73 op_name,
74 (type & SPITYPE_PREFIX) ? "Write" : "Read",
75 (type & SPITYPE_ADDRESS) ? ", w/3 byte address" : "");
76 }
77
78 /* Display the BIOS base address */
79 printk(BIOS_DEBUG, "0x%08x: BIOS Base Address\n", ctrlr->bbar);
80
81 /* Display the protection ranges */
Martin Roth26f97f92021-10-01 14:53:22 -0600[diff] [blame]82 printk(BIOS_DEBUG, "BIOS Protected Range Registers\n");
Lee Leahyd9351092017-05-24 13:23:26 -0700[diff] [blame]83 for (index = 0; index < ARRAY_SIZE(ctrlr->pbr); index++) {
84 status = ctrlr->pbr[index];
85 printk(BIOS_DEBUG, " %d: 0x%08x: 0x%08x - 0x%08x %s\n",
86 index, status,
87 0xff000000 | (0x1000000 - CONFIG_ROM_SIZE)
88 | ((status & SPIPBR_PRB) << SPIPBR_PRB_SHIFT),
89 0xff800fff | (0x1000000 - CONFIG_ROM_SIZE)
90 | (status & SPIPBR_PRL),
91 (status & SPIPBR_WPE) ? "Protected" : "Unprotected");
92 }
93
94 /* Display locked status */
95 status = ctrlr->status;
96 printk(BIOS_DEBUG, "0x%04x: SPISTS, Tables %s\n", status,
97 (status & SPISTS_CLD) ? "Locked" : "Unlocked");
98}