new file mode 100644
@@ -0,0 +1,128 @@
+From d432049f288c9acdc4a7caa729c68ceba3c5dca1 Mon Sep 17 00:00:00 2001
+From: Aaro Koskinen <aaro.koskinen@nokia.com>
+Date: Thu, 25 Aug 2022 18:47:02 +0300
+Subject: [PATCH] devmem: add 128-bit width
+
+Add 128-bit width if the compiler provides the needed type.
+
+function old new delta
+devmem_main 405 464 +59
+.rodata 109025 109043 +18
+------------------------------------------------------------------------------
+(add/remove: 0/0 grow/shrink: 2/0 up/down: 77/0) Total: 77 bytes
+
+Upstream-Status: Backport [https://git.busybox.net/busybox/commit/?id=d432049f288c9acdc4a7caa729c68ceba3c5dca1]
+
+Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
+Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
+Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
+Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
+---
+ miscutils/devmem.c | 68 ++++++++++++++++++++++++++++++----------------
+ 1 file changed, 44 insertions(+), 24 deletions(-)
+
+diff --git a/miscutils/devmem.c b/miscutils/devmem.c
+index f9f0276bc..f21621bd6 100644
+--- a/miscutils/devmem.c
++++ b/miscutils/devmem.c
+@@ -29,7 +29,6 @@ int devmem_main(int argc UNUSED_PARAM, char **argv)
+ {
+ void *map_base, *virt_addr;
+ uint64_t read_result;
+- uint64_t writeval = writeval; /* for compiler */
+ off_t target;
+ unsigned page_size, mapped_size, offset_in_page;
+ int fd;
+@@ -64,9 +63,6 @@ int devmem_main(int argc UNUSED_PARAM, char **argv)
+ width = strchrnul(bhwl, (argv[2][0] | 0x20)) - bhwl;
+ width = sizes[width];
+ }
+- /* VALUE */
+- if (argv[3])
+- writeval = bb_strtoull(argv[3], NULL, 0);
+ } else { /* argv[2] == NULL */
+ /* make argv[3] to be a valid thing to fetch */
+ argv--;
+@@ -96,28 +92,46 @@ int devmem_main(int argc UNUSED_PARAM, char **argv)
+ virt_addr = (char*)map_base + offset_in_page;
+
+ if (!argv[3]) {
+- switch (width) {
+- case 8:
+- read_result = *(volatile uint8_t*)virt_addr;
+- break;
+- case 16:
+- read_result = *(volatile uint16_t*)virt_addr;
+- break;
+- case 32:
+- read_result = *(volatile uint32_t*)virt_addr;
+- break;
+- case 64:
+- read_result = *(volatile uint64_t*)virt_addr;
+- break;
+- default:
+- bb_simple_error_msg_and_die("bad width");
++#ifdef __SIZEOF_INT128__
++ if (width == 128) {
++ unsigned __int128 rd =
++ *(volatile unsigned __int128 *)virt_addr;
++ printf("0x%016llX%016llX\n",
++ (unsigned long long)(uint64_t)(rd >> 64),
++ (unsigned long long)(uint64_t)rd
++ );
++ } else
++#endif
++ {
++ switch (width) {
++ case 8:
++ read_result = *(volatile uint8_t*)virt_addr;
++ break;
++ case 16:
++ read_result = *(volatile uint16_t*)virt_addr;
++ break;
++ case 32:
++ read_result = *(volatile uint32_t*)virt_addr;
++ break;
++ case 64:
++ read_result = *(volatile uint64_t*)virt_addr;
++ break;
++ default:
++ bb_simple_error_msg_and_die("bad width");
++ }
++// printf("Value at address 0x%"OFF_FMT"X (%p): 0x%llX\n",
++// target, virt_addr,
++// (unsigned long long)read_result);
++ /* Zero-padded output shows the width of access just done */
++ printf("0x%0*llX\n", (width >> 2), (unsigned long long)read_result);
+ }
+-// printf("Value at address 0x%"OFF_FMT"X (%p): 0x%llX\n",
+-// target, virt_addr,
+-// (unsigned long long)read_result);
+- /* Zero-padded output shows the width of access just done */
+- printf("0x%0*llX\n", (width >> 2), (unsigned long long)read_result);
+ } else {
++ /* parse VALUE */
++#ifdef __SIZEOF_INT128__
++ unsigned __int128 writeval = strtoumax(argv[3], NULL, 0);
++#else
++ uint64_t writeval = bb_strtoull(argv[3], NULL, 0);
++#endif
+ switch (width) {
+ case 8:
+ *(volatile uint8_t*)virt_addr = writeval;
+@@ -135,6 +149,12 @@ int devmem_main(int argc UNUSED_PARAM, char **argv)
+ *(volatile uint64_t*)virt_addr = writeval;
+ // read_result = *(volatile uint64_t*)virt_addr;
+ break;
++#ifdef __SIZEOF_INT128__
++ case 128:
++ *(volatile unsigned __int128 *)virt_addr = writeval;
++// read_result = *(volatile uint64_t*)virt_addr;
++ break;
++#endif
+ default:
+ bb_simple_error_msg_and_die("bad width");
+ }
+--
+2.25.1
+
@@ -50,6 +50,7 @@ SRC_URI = "https://busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
file://0001-libbb-sockaddr2str-ensure-only-printable-characters-.patch \
file://0002-nslookup-sanitize-all-printed-strings-with-printable.patch \
file://CVE-2022-30065.patch \
+ file://0001-devmem-add-128-bit-width.patch \
"
SRC_URI:append:libc-musl = " file://musl.cfg "