This adds a new command 'addrmap' to display the address map for
non-identity virtual-physical memory mappings.
Signed-off-by: Bin Meng <bmeng...@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...@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
--
2.7.4
