This adds a new command 'addrmap' to display the address map for non-identity virtual-physical memory mappings.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
---
Changes in v2: - add doc/usage/addrmap.rst
cmd/Kconfig | 7 +++++++ cmd/Makefile | 1 + cmd/addrmap.c | 35 +++++++++++++++++++++++++++++++++++ doc/usage/addrmap.rst | 41 +++++++++++++++++++++++++++++++++++++++++ doc/usage/index.rst | 1 + 5 files changed, 85 insertions(+) create mode 100644 cmd/addrmap.c create mode 100644 doc/usage/addrmap.rst
diff --git a/cmd/Kconfig b/cmd/Kconfig index 928a2a0..2021939 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -97,6 +97,13 @@ config CMD_ACPI between the firmware and OS, and is particularly useful when you want to make hardware changes without the OS needing to be adjusted.
+config CMD_ADDRMAP + bool "addrmap" + depends on ADDR_MAP + default y + help + List non-identity virtual-physical memory mappings for 32-bit CPUs. + config CMD_BDI bool "bdinfo" default y diff --git a/cmd/Makefile b/cmd/Makefile index 176bf92..567e2b7 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -13,6 +13,7 @@ obj-y += version.o
# command obj-$(CONFIG_CMD_ACPI) += acpi.o +obj-$(CONFIG_CMD_ADDRMAP) += addrmap.o obj-$(CONFIG_CMD_AES) += aes.o obj-$(CONFIG_CMD_AB_SELECT) += ab_select.o obj-$(CONFIG_CMD_ADC) += adc.o diff --git a/cmd/addrmap.c b/cmd/addrmap.c new file mode 100644 index 0000000..bd23549 --- /dev/null +++ b/cmd/addrmap.c @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2021, Bin Meng bmeng.cn@gmail.com + */ + +#include <common.h> +#include <command.h> +#include <addr_map.h> + +static int do_addrmap(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + int i; + + printf(" vaddr paddr size\n"); + printf("================ ================ ================\n"); + + for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++) { + if (address_map[i].size == 0) + continue; + + printf("%16.8lx %16.8llx %16.8llx\n", + address_map[i].vaddr, + (unsigned long long)address_map[i].paddr, + (unsigned long long)address_map[i].size); + } + + return 0; +} + +U_BOOT_CMD( + addrmap, 1, 1, do_addrmap, + "List non-identity virtual-physical memory mappings for 32-bit CPUs", + "" +); diff --git a/doc/usage/addrmap.rst b/doc/usage/addrmap.rst new file mode 100644 index 0000000..472fd54 --- /dev/null +++ b/doc/usage/addrmap.rst @@ -0,0 +1,41 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +addrmap command +=============== + +Synopsis +-------- + +:: + + addrmap + +Description +----------- + +The addrmap command is used to display non-identity virtual-physical memory +mappings for 32-bit CPUs. + +The output may look like: + +:: + + => addrmap + vaddr paddr size + ================ ================ ================ + e0000000 fe0000000 00100000 + 00000000 00000000 04000000 + 04000000 04000000 04000000 + 80000000 c00000000 10000000 + 90000000 c10000000 10000000 + a0000000 fe1000000 00010000 + +The first column indicates the virtual address. +The second column indicates the physical address. +The third column indicates the mapped size. + +Configuration +------------- + +To use the addrmap command you must specify CONFIG_CMD_ADDRMAP=y. +It is automatically turned on when CONFIG_ADDR_MAP is set. diff --git a/doc/usage/index.rst b/doc/usage/index.rst index 5754958..fe752cc 100644 --- a/doc/usage/index.rst +++ b/doc/usage/index.rst @@ -13,6 +13,7 @@ Shell commands .. toctree:: :maxdepth: 1
+ addrmap base bootefi bootmenu