/*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* (C) Copyright 2018 Rockchip Electronics Co., Ltd
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*
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*/
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#include <asm/io.h>
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#include <common.h>
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#include <dm.h>
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#include <fdtdec.h>
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enum ops {
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SEARCH_NAME,
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SEARCH_COMP,
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};
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void iomem_show(const char *label, unsigned long base, size_t start, size_t end)
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{
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unsigned long val, offset = start, nr = 0;
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if (label)
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printf("%s:\n", label);
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printf("%08lx: ", base + offset);
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for (offset = start; offset <= end; offset += 0x04) {
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if (nr >= 4) {
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printf("\n%08lx: ", base + offset);
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nr = 0;
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}
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val = readl((void __iomem *)base + offset);
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printf("%08lx ", val);
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nr++;
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}
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printf("\n");
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}
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static int iomem_show_by_match(enum ops op, const char *search,
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size_t start, size_t end)
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{
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const void *fdt = gd->fdt_blob;
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const char *name;
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fdt_addr_t addr;
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int found = 0;
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int offset;
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for (offset = fdt_next_node(fdt, 0, NULL);
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offset >= 0;
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offset = fdt_next_node(fdt, offset, NULL)) {
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if (op == SEARCH_COMP)
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name = fdt_getprop(fdt, offset, "compatible", NULL);
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else if (op == SEARCH_NAME)
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name = fdt_get_name(fdt, offset, NULL);
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else
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goto out;
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if (!name)
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continue;
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if (strstr(name, search)) {
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addr = fdtdec_get_addr_size_auto_noparent(fdt, offset,
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"reg", 0, NULL, false);
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if (addr == FDT_ADDR_T_NONE)
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goto out;
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iomem_show(name, addr, start, end);
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found = 1;
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break;
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}
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}
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printf("\n");
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out:
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return found;
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}
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void iomem_show_by_compatible(const char *compat, size_t start, size_t end)
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{
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iomem_show_by_match(SEARCH_COMP, compat, start, end);
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}
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static int do_iomem_by_match(cmd_tbl_t *cmdtp, int flag,
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int argc, char *const argv[])
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{
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size_t start, end;
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const char *search;
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if (argc != 4)
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return CMD_RET_USAGE;
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search = argv[1];
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start = simple_strtoul(argv[2], NULL, 0);
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end = simple_strtoul(argv[3], NULL, 0);
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if (start > end) {
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printf("Invalid: 0x%lx > 0x%lx\n", (ulong)start, (ulong)end);
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return CMD_RET_FAILURE;
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}
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if (!iomem_show_by_match(SEARCH_COMP, search, start, end))
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iomem_show_by_match(SEARCH_NAME, search, start, end);
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return 0;
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}
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U_BOOT_CMD(
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iomem, 4, 1, do_iomem_by_match,
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"Show iomem data by device compatible(high priority) or node name",
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"iomem <compatible or node name> <start offset> <end offset>\n"
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" eg: iomem -grf 0x0 0x200"
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" eg: iomem gpio3 0x0 0x200"
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);
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