diff options
| author | Matthias Weisser <weisserm@arcor.de> | 2011-11-05 11:40:34 +0100 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-12-10 17:54:04 -0500 |
| commit | 21899b10850b8ba155b16038fac5dd8d98214842 (patch) | |
| tree | 704f143e00b60eb3a2f405fb3d8870c59b527425 /arch/sandbox | |
| parent | c90a4dd79cb17abb46689f27ff9f1c971362d6e2 (diff) | |
| download | u-boot-imx-21899b10850b8ba155b16038fac5dd8d98214842.zip u-boot-imx-21899b10850b8ba155b16038fac5dd8d98214842.tar.gz u-boot-imx-21899b10850b8ba155b16038fac5dd8d98214842.tar.bz2 | |
sandbox: Add improved RAM simulation
Using mmap to allocate memory from the OS for RAM simulation we can use
u-boot own malloc implementation.
Tested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Matthias Weisser <weisserm@arcor.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/sandbox')
| -rw-r--r-- | arch/sandbox/cpu/os.c | 7 | ||||
| -rw-r--r-- | arch/sandbox/lib/board.c | 17 |
2 files changed, 17 insertions, 7 deletions
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index f80faac..b7c3bf5 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -25,6 +25,7 @@ #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> +#include <sys/mman.h> #include <os.h> @@ -87,3 +88,9 @@ void os_tty_raw(int fd) atexit(os_fd_restore); } + +void *os_malloc(size_t length) +{ + return mmap(NULL, length, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); +} diff --git a/arch/sandbox/lib/board.c b/arch/sandbox/lib/board.c index ae5a517..b7997e9 100644 --- a/arch/sandbox/lib/board.c +++ b/arch/sandbox/lib/board.c @@ -45,8 +45,12 @@ #include <version.h> #include <serial.h> +#include <os.h> + DECLARE_GLOBAL_DATA_PTR; +static gd_t gd_mem; + /************************************************************************ * Init Utilities * ************************************************************************ @@ -147,7 +151,7 @@ void board_init_f(ulong bootflag) uchar *mem; unsigned long addr_sp, addr, size; - gd = malloc(sizeof(gd_t)); + gd = &gd_mem; assert(gd); memset((void *)gd, 0, sizeof(gd_t)); @@ -158,7 +162,8 @@ void board_init_f(ulong bootflag) } size = CONFIG_SYS_SDRAM_SIZE; - mem = malloc(size); + mem = os_malloc(CONFIG_SYS_SDRAM_SIZE); + assert(mem); gd->ram_buf = mem; addr = (ulong)(mem + size); @@ -214,11 +219,9 @@ void board_init_r(gd_t *id, ulong dest_addr) post_output_backlog(); #endif -#if 0 /* Sandbox uses system malloc for now */ - /* The Malloc area is immediately below the monitor copy in DRAM */ - malloc_start = dest_addr - TOTAL_MALLOC_LEN; - mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN); -#endif + /* The Malloc area is at the top of simulated DRAM */ + mem_malloc_init((ulong)gd->ram_buf + gd->ram_size - TOTAL_MALLOC_LEN, + TOTAL_MALLOC_LEN); /* initialize environment */ env_relocate(); |