| Armin Kuster | 066be20 | 2018-07-08 14:58:53 -0700 | [diff] [blame] | 1 | From 1360a907879dd24041797a3b709d49aeac2ab444 Mon Sep 17 00:00:00 2001 |
| 2 | From: Denys Dmytriyenko <denys@ti.com> |
| 3 | Date: Tue, 29 May 2018 16:55:42 -0400 |
| 4 | Subject: [PATCH] devmem.c: ensure word is 32-bit and add support for 64-bit |
| 5 | long |
| 6 | |
| 7 | Signed-off-by: Denys Dmytriyenko <denys@ti.com> |
| 8 | --- |
| 9 | devmem2.c | 23 +++++++++++++++++------ |
| 10 | 1 file changed, 17 insertions(+), 6 deletions(-) |
| 11 | |
| 12 | diff --git a/devmem2.c b/devmem2.c |
| 13 | index 5845381..68131b2 100644 |
| 14 | --- a/devmem2.c |
| 15 | +++ b/devmem2.c |
| 16 | @@ -39,6 +39,7 @@ |
| 17 | |
| 18 | #include <stdio.h> |
| 19 | #include <stdlib.h> |
| 20 | +#include <stdint.h> |
| 21 | #include <unistd.h> |
| 22 | #include <string.h> |
| 23 | #include <errno.h> |
| 24 | @@ -69,7 +70,7 @@ int main(int argc, char **argv) { |
| 25 | if(argc < 2) { |
| 26 | fprintf(stderr, "\nUsage:\t%s { address } [ type [ data ] ]\n" |
| 27 | "\taddress : memory address to act upon\n" |
| 28 | - "\ttype : access operation type : [b]yte, [h]alfword, [w]ord\n" |
| 29 | + "\ttype : access operation type : [b]yte, [h]alfword, [w]ord, [l]ong\n" |
| 30 | "\tdata : data to be written\n\n", |
| 31 | argv[0]); |
| 32 | exit(1); |
| 33 | @@ -103,9 +104,14 @@ int main(int argc, char **argv) { |
| 34 | read_result = *((unsigned short *) virt_addr); |
| 35 | break; |
| 36 | case 'w': |
| 37 | - data_size = sizeof(unsigned long); |
| 38 | + data_size = sizeof(uint32_t); |
| 39 | virt_addr = fixup_addr(virt_addr, data_size); |
| 40 | - read_result = *((unsigned long *) virt_addr); |
| 41 | + read_result = *((uint32_t *) virt_addr); |
| 42 | + break; |
| 43 | + case 'l': |
| 44 | + data_size = sizeof(uint64_t); |
| 45 | + virt_addr = fixup_addr(virt_addr, data_size); |
| 46 | + read_result = *((uint64_t *) virt_addr); |
| 47 | break; |
| 48 | default: |
| 49 | fprintf(stderr, "Illegal data type '%c'.\n", access_type); |
| 50 | @@ -129,9 +135,14 @@ int main(int argc, char **argv) { |
| 51 | read_result = *((unsigned short *) virt_addr); |
| 52 | break; |
| 53 | case 'w': |
| 54 | - virt_addr = fixup_addr(virt_addr, sizeof(unsigned long)); |
| 55 | - *((unsigned long *) virt_addr) = write_val; |
| 56 | - read_result = *((unsigned long *) virt_addr); |
| 57 | + virt_addr = fixup_addr(virt_addr, sizeof(uint32_t)); |
| 58 | + *((uint32_t *) virt_addr) = write_val; |
| 59 | + read_result = *((uint32_t *) virt_addr); |
| 60 | + break; |
| 61 | + case 'l': |
| 62 | + virt_addr = fixup_addr(virt_addr, sizeof(uint64_t)); |
| 63 | + *((uint64_t *) virt_addr) = write_val; |
| 64 | + read_result = *((uint64_t *) virt_addr); |
| 65 | break; |
| 66 | } |
| 67 | sprintf(fmt_str, "Write at address 0x%%08lX (%%p): 0x%%0%dlX, " |
| 68 | -- |
| 69 | 2.7.4 |
| 70 | |