sandbox: Avoid using malloc() for system state
This state is not accessible to the running U-Boot but at present it is
allocated in the emulated SDRAM. This doesn't seem very useful. Adjust
it to allocate from the OS instead.
The RAM buffer is currently not freed, but should be, so add that into
state_uninit(). Update the comment for os_free() to indicate that NULL is
a valid parameter value.
Note that the strdup() in spl_board_load_image() is changed as well, since
strdup() allocates memory in the RAM buffer.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/sandbox/cpu/state.c b/arch/sandbox/cpu/state.c
index b2901b7..4ffaf16 100644
--- a/arch/sandbox/cpu/state.c
+++ b/arch/sandbox/cpu/state.c
@@ -29,17 +29,17 @@
return 0;
size = used + extra_size;
- buf = malloc(size);
+ buf = os_malloc(size);
if (!buf)
return -ENOMEM;
ret = fdt_open_into(blob, buf, size);
if (ret) {
- free(buf);
+ os_free(buf);
return -EIO;
}
- free(blob);
+ os_free(blob);
state->state_fdt = buf;
return 0;
}
@@ -55,7 +55,7 @@
printf("Cannot find sandbox state file '%s'\n", fname);
return -ENOENT;
}
- state->state_fdt = malloc(size);
+ state->state_fdt = os_malloc(size);
if (!state->state_fdt) {
puts("No memory to read sandbox state\n");
return -ENOMEM;
@@ -77,7 +77,7 @@
err_read:
os_close(fd);
err_open:
- free(state->state_fdt);
+ os_free(state->state_fdt);
state->state_fdt = NULL;
return ret;
@@ -244,7 +244,7 @@
/* Create a state FDT if we don't have one */
if (!state->state_fdt) {
size = 0x4000;
- state->state_fdt = malloc(size);
+ state->state_fdt = os_malloc(size);
if (!state->state_fdt) {
puts("No memory to create FDT\n");
return -ENOMEM;
@@ -302,7 +302,7 @@
err_write:
os_close(fd);
err_create:
- free(state->state_fdt);
+ os_free(state->state_fdt);
return ret;
}
@@ -419,8 +419,8 @@
if (state->jumped_fname)
os_unlink(state->jumped_fname);
- if (state->state_fdt)
- free(state->state_fdt);
+ os_free(state->state_fdt);
+ os_free(state->ram_buf);
memset(state, '\0', sizeof(*state));
return 0;