1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * (C) Copyright 2018 Rockchip Electronics Co., Ltd
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <asm/io.h>
9*4882a593Smuzhiyun #include <common.h>
10*4882a593Smuzhiyun #include <dm.h>
11*4882a593Smuzhiyun #include <fdtdec.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun enum ops {
14*4882a593Smuzhiyun SEARCH_NAME,
15*4882a593Smuzhiyun SEARCH_COMP,
16*4882a593Smuzhiyun };
17*4882a593Smuzhiyun
iomem_show(const char * label,unsigned long base,size_t start,size_t end)18*4882a593Smuzhiyun void iomem_show(const char *label, unsigned long base, size_t start, size_t end)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun unsigned long val, offset = start, nr = 0;
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun if (label)
23*4882a593Smuzhiyun printf("%s:\n", label);
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun printf("%08lx: ", base + offset);
26*4882a593Smuzhiyun for (offset = start; offset <= end; offset += 0x04) {
27*4882a593Smuzhiyun if (nr >= 4) {
28*4882a593Smuzhiyun printf("\n%08lx: ", base + offset);
29*4882a593Smuzhiyun nr = 0;
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun val = readl((void __iomem *)base + offset);
32*4882a593Smuzhiyun printf("%08lx ", val);
33*4882a593Smuzhiyun nr++;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun printf("\n");
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
iomem_show_by_match(enum ops op,const char * search,size_t start,size_t end)38*4882a593Smuzhiyun static int iomem_show_by_match(enum ops op, const char *search,
39*4882a593Smuzhiyun size_t start, size_t end)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun const void *fdt = gd->fdt_blob;
42*4882a593Smuzhiyun const char *name;
43*4882a593Smuzhiyun fdt_addr_t addr;
44*4882a593Smuzhiyun int found = 0;
45*4882a593Smuzhiyun int offset;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun for (offset = fdt_next_node(fdt, 0, NULL);
48*4882a593Smuzhiyun offset >= 0;
49*4882a593Smuzhiyun offset = fdt_next_node(fdt, offset, NULL)) {
50*4882a593Smuzhiyun if (op == SEARCH_COMP)
51*4882a593Smuzhiyun name = fdt_getprop(fdt, offset, "compatible", NULL);
52*4882a593Smuzhiyun else if (op == SEARCH_NAME)
53*4882a593Smuzhiyun name = fdt_get_name(fdt, offset, NULL);
54*4882a593Smuzhiyun else
55*4882a593Smuzhiyun goto out;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun if (!name)
58*4882a593Smuzhiyun continue;
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun if (strstr(name, search)) {
61*4882a593Smuzhiyun addr = fdtdec_get_addr_size_auto_noparent(fdt, offset,
62*4882a593Smuzhiyun "reg", 0, NULL, false);
63*4882a593Smuzhiyun if (addr == FDT_ADDR_T_NONE)
64*4882a593Smuzhiyun goto out;
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun iomem_show(name, addr, start, end);
67*4882a593Smuzhiyun found = 1;
68*4882a593Smuzhiyun break;
69*4882a593Smuzhiyun }
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun printf("\n");
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun out:
74*4882a593Smuzhiyun return found;
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
iomem_show_by_compatible(const char * compat,size_t start,size_t end)77*4882a593Smuzhiyun void iomem_show_by_compatible(const char *compat, size_t start, size_t end)
78*4882a593Smuzhiyun {
79*4882a593Smuzhiyun iomem_show_by_match(SEARCH_COMP, compat, start, end);
80*4882a593Smuzhiyun }
81*4882a593Smuzhiyun
do_iomem_by_match(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])82*4882a593Smuzhiyun static int do_iomem_by_match(cmd_tbl_t *cmdtp, int flag,
83*4882a593Smuzhiyun int argc, char *const argv[])
84*4882a593Smuzhiyun {
85*4882a593Smuzhiyun size_t start, end;
86*4882a593Smuzhiyun const char *search;
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun if (argc != 4)
89*4882a593Smuzhiyun return CMD_RET_USAGE;
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun search = argv[1];
92*4882a593Smuzhiyun start = simple_strtoul(argv[2], NULL, 0);
93*4882a593Smuzhiyun end = simple_strtoul(argv[3], NULL, 0);
94*4882a593Smuzhiyun if (start > end) {
95*4882a593Smuzhiyun printf("Invalid: 0x%lx > 0x%lx\n", (ulong)start, (ulong)end);
96*4882a593Smuzhiyun return CMD_RET_FAILURE;
97*4882a593Smuzhiyun }
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun if (!iomem_show_by_match(SEARCH_COMP, search, start, end))
100*4882a593Smuzhiyun iomem_show_by_match(SEARCH_NAME, search, start, end);
101*4882a593Smuzhiyun
102*4882a593Smuzhiyun return 0;
103*4882a593Smuzhiyun }
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun U_BOOT_CMD(
106*4882a593Smuzhiyun iomem, 4, 1, do_iomem_by_match,
107*4882a593Smuzhiyun "Show iomem data by device compatible(high priority) or node name",
108*4882a593Smuzhiyun "iomem <compatible or node name> <start offset> <end offset>\n"
109*4882a593Smuzhiyun " eg: iomem -grf 0x0 0x200"
110*4882a593Smuzhiyun " eg: iomem gpio3 0x0 0x200"
111*4882a593Smuzhiyun );
112