From 1360a907879dd24041797a3b709d49aeac2ab444 Mon Sep 17 00:00:00 2001
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From: Denys Dmytriyenko <denys@ti.com>
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Date: Tue, 29 May 2018 16:55:42 -0400
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Subject: [PATCH] devmem.c: ensure word is 32-bit and add support for 64-bit
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long
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Signed-off-by: Denys Dmytriyenko <denys@ti.com>
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---
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devmem2.c | 23 +++++++++++++++++------
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1 file changed, 17 insertions(+), 6 deletions(-)
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diff --git a/devmem2.c b/devmem2.c
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index 5845381..68131b2 100644
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--- a/devmem2.c
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+++ b/devmem2.c
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@@ -39,6 +39,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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+#include <stdint.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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@@ -69,7 +70,7 @@ int main(int argc, char **argv) {
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if(argc < 2) {
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fprintf(stderr, "\nUsage:\t%s { address } [ type [ data ] ]\n"
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"\taddress : memory address to act upon\n"
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- "\ttype : access operation type : [b]yte, [h]alfword, [w]ord\n"
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+ "\ttype : access operation type : [b]yte, [h]alfword, [w]ord, [l]ong\n"
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"\tdata : data to be written\n\n",
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argv[0]);
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exit(1);
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@@ -103,9 +104,14 @@ int main(int argc, char **argv) {
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read_result = *((unsigned short *) virt_addr);
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break;
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case 'w':
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- data_size = sizeof(unsigned long);
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+ data_size = sizeof(uint32_t);
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virt_addr = fixup_addr(virt_addr, data_size);
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- read_result = *((unsigned long *) virt_addr);
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+ read_result = *((uint32_t *) virt_addr);
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+ break;
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+ case 'l':
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+ data_size = sizeof(uint64_t);
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+ virt_addr = fixup_addr(virt_addr, data_size);
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+ read_result = *((uint64_t *) virt_addr);
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break;
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default:
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fprintf(stderr, "Illegal data type '%c'.\n", access_type);
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@@ -129,9 +135,14 @@ int main(int argc, char **argv) {
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read_result = *((unsigned short *) virt_addr);
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break;
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case 'w':
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- virt_addr = fixup_addr(virt_addr, sizeof(unsigned long));
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- *((unsigned long *) virt_addr) = write_val;
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- read_result = *((unsigned long *) virt_addr);
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+ virt_addr = fixup_addr(virt_addr, sizeof(uint32_t));
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+ *((uint32_t *) virt_addr) = write_val;
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+ read_result = *((uint32_t *) virt_addr);
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+ break;
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+ case 'l':
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+ virt_addr = fixup_addr(virt_addr, sizeof(uint64_t));
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+ *((uint64_t *) virt_addr) = write_val;
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+ read_result = *((uint64_t *) virt_addr);
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break;
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}
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sprintf(fmt_str, "Write at address 0x%%08lX (%%p): 0x%%0%dlX, "
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--
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2.7.4
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