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devmem2: reinstate previous patches, removed by mistake

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This reverts commit 5e8f4720aa.

Signed-off-by: Denys Dmytriyenko <denis@denix.org>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Denys Dmytriyenko 2022-05-05 21:51:25 +00:00 committed by Khem Raj
parent f334a00947
commit e192bd13ff
3 changed files with 163 additions and 1 deletions
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3
meta-oe/recipes-support/devmem2/devmem2.bb
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@ -4,7 +4,8 @@ LIC_FILES_CHKSUM = "file://devmem2.c;endline=38;md5=a9eb9f3890384519f435aedf9862
PR = "r7"
SRC_URI = "http://www.free-electrons.com/pub/mirror/devmem2.c;downloadfilename=devmem2-new.c \
"
file://devmem2-fixups-2.patch;apply=yes;striplevel=0 \
file://0001-devmem.c-ensure-word-is-32-bit-and-add-support-for-6.patch"
S = "${WORKDIR}"

70
meta-oe/recipes-support/devmem2/devmem2/0001-devmem.c-ensure-word-is-32-bit-and-add-support-for-6.patch Normal file
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@ -0,0 +1,70 @@
From 1360a907879dd24041797a3b709d49aeac2ab444 Mon Sep 17 00:00:00 2001
From: Denys Dmytriyenko <denys@ti.com>
Date: Tue, 29 May 2018 16:55:42 -0400
Subject: [PATCH] devmem.c: ensure word is 32-bit and add support for 64-bit
long
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
---
devmem2.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/devmem2.c b/devmem2.c
index 5845381..68131b2 100644
--- a/devmem2.c
+++ b/devmem2.c
@@ -39,6 +39,7 @@
#include <stdio.h>
#include <stdlib.h>
+#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
@@ -69,7 +70,7 @@ int main(int argc, char **argv) {
if(argc < 2) {
fprintf(stderr, "\nUsage:\t%s { address } [ type [ data ] ]\n"
"\taddress : memory address to act upon\n"
- "\ttype : access operation type : [b]yte, [h]alfword, [w]ord\n"
+ "\ttype : access operation type : [b]yte, [h]alfword, [w]ord, [l]ong\n"
"\tdata : data to be written\n\n",
argv[0]);
exit(1);
@@ -103,9 +104,14 @@ int main(int argc, char **argv) {
read_result = *((unsigned short *) virt_addr);
break;
case 'w':
- data_size = sizeof(unsigned long);
+ data_size = sizeof(uint32_t);
virt_addr = fixup_addr(virt_addr, data_size);
- read_result = *((unsigned long *) virt_addr);
+ read_result = *((uint32_t *) virt_addr);
+ break;
+ case 'l':
+ data_size = sizeof(uint64_t);
+ virt_addr = fixup_addr(virt_addr, data_size);
+ read_result = *((uint64_t *) virt_addr);
break;
default:
fprintf(stderr, "Illegal data type '%c'.\n", access_type);
@@ -129,9 +135,14 @@ int main(int argc, char **argv) {
read_result = *((unsigned short *) virt_addr);
break;
case 'w':
- virt_addr = fixup_addr(virt_addr, sizeof(unsigned long));
- *((unsigned long *) virt_addr) = write_val;
- read_result = *((unsigned long *) virt_addr);
+ virt_addr = fixup_addr(virt_addr, sizeof(uint32_t));
+ *((uint32_t *) virt_addr) = write_val;
+ read_result = *((uint32_t *) virt_addr);
+ break;
+ case 'l':
+ virt_addr = fixup_addr(virt_addr, sizeof(uint64_t));
+ *((uint64_t *) virt_addr) = write_val;
+ read_result = *((uint64_t *) virt_addr);
break;
}
sprintf(fmt_str, "Write at address 0x%%08lX (%%p): 0x%%0%dlX, "
--
2.7.4

91
meta-oe/recipes-support/devmem2/devmem2/devmem2-fixups-2.patch Normal file
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@ -0,0 +1,91 @@
--- devmem2.c 2004-08-05 01:55:25.000000000 +0200
+++ devmem2_modif.c 2011-01-13 15:48:37.798799784 +0100
@@ -45,12 +45,16 @@
#define MAP_SIZE 4096UL
#define MAP_MASK (MAP_SIZE - 1)
+static inline void *fixup_addr(void *addr, size_t size);
+
int main(int argc, char **argv) {
int fd;
void *map_base, *virt_addr;
- unsigned long read_result, writeval;
+ unsigned long read_result, write_val;
off_t target;
int access_type = 'w';
+ char fmt_str[128];
+ size_t data_size;
if(argc < 2) {
fprintf(stderr, "\nUsage:\t%s { address } [ type [ data ] ]\n"
@@ -79,38 +83,51 @@
virt_addr = map_base + (target & MAP_MASK);
switch(access_type) {
case 'b':
+ data_size = sizeof(unsigned char);
+ virt_addr = fixup_addr(virt_addr, data_size);
read_result = *((unsigned char *) virt_addr);
break;
case 'h':
+ data_size = sizeof(unsigned short);
+ virt_addr = fixup_addr(virt_addr, data_size);
read_result = *((unsigned short *) virt_addr);
break;
case 'w':
+ data_size = sizeof(unsigned long);
+ virt_addr = fixup_addr(virt_addr, data_size);
read_result = *((unsigned long *) virt_addr);
break;
default:
fprintf(stderr, "Illegal data type '%c'.\n", access_type);
exit(2);
}
- printf("Value at address 0x%X (%p): 0x%X\n", target, virt_addr, read_result);
+ sprintf(fmt_str, "Read at address 0x%%08lX (%%p): 0x%%0%dlX\n", 2*data_size);
+ printf(fmt_str, (unsigned long)target, virt_addr, read_result);
fflush(stdout);
if(argc > 3) {
- writeval = strtoul(argv[3], 0, 0);
+ write_val = strtoul(argv[3], 0, 0);
switch(access_type) {
case 'b':
- *((unsigned char *) virt_addr) = writeval;
+ virt_addr = fixup_addr(virt_addr, sizeof(unsigned char));
+ *((unsigned char *) virt_addr) = write_val;
read_result = *((unsigned char *) virt_addr);
break;
case 'h':
- *((unsigned short *) virt_addr) = writeval;
+ virt_addr = fixup_addr(virt_addr, sizeof(unsigned short));
+ *((unsigned short *) virt_addr) = write_val;
read_result = *((unsigned short *) virt_addr);
break;
case 'w':
- *((unsigned long *) virt_addr) = writeval;
+ virt_addr = fixup_addr(virt_addr, sizeof(unsigned long));
+ *((unsigned long *) virt_addr) = write_val;
read_result = *((unsigned long *) virt_addr);
break;
}
- printf("Written 0x%X; readback 0x%X\n", writeval, read_result);
+ sprintf(fmt_str, "Write at address 0x%%08lX (%%p): 0x%%0%dlX, "
+ "readback 0x%%0%dlX\n", 2*data_size, 2*data_size);
+ printf(fmt_str, (unsigned long)target, virt_addr,
+ write_val, read_result);
fflush(stdout);
}
@@ -119,3 +136,12 @@
return 0;
}
+static inline void *fixup_addr(void *addr, size_t size)
+{
+#ifdef FORCE_STRICT_ALIGNMENT
+ unsigned long aligned_addr = (unsigned long)addr;
+ aligned_addr &= ~(size - 1);
+ addr = (void *)aligned_addr;
+#endif
+ return addr;
+}