diff options
| -rw-r--r-- | README | 13 | ||||
| -rw-r--r-- | common/board_f.c | 12 | ||||
| -rw-r--r-- | common/board_r.c | 4 | ||||
| -rw-r--r-- | common/dlmalloc.c | 35 | ||||
| -rw-r--r-- | include/asm-generic/global_data.h | 5 | ||||
| -rw-r--r-- | lib/asm-offsets.c | 3 |
6 files changed, 72 insertions, 0 deletions
@@ -3736,6 +3736,19 @@ Configuration Settings: - CONFIG_SYS_MALLOC_LEN: Size of DRAM reserved for malloc() use. +- CONFIG_SYS_MALLOC_F_LEN + Size of the malloc() pool for use before relocation. If + this is defined, then a very simple malloc() implementation + will become available before relocation. The address is just + below the global data, and the stack is moved down to make + space. + + This feature allocates regions with increasing addresses + within the region. calloc() is supported, but realloc() + is not available. free() is supported but does nothing. + The memory will be freed (or in fact just forgotton) when + U-Boot relocates itself. + - CONFIG_SYS_BOOTM_LEN: Normally compressed uImages are limited to an uncompressed size of 8 MBytes. If this is not enough, diff --git a/common/board_f.c b/common/board_f.c index bdab38e..6b2e277 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -767,6 +767,17 @@ static int mark_bootstage(void) return 0; } +static int initf_malloc(void) +{ +#ifdef CONFIG_SYS_MALLOC_F_LEN + assert(gd->malloc_base); /* Set up by crt0.S */ + gd->malloc_limit = gd->malloc_base + CONFIG_SYS_MALLOC_F_LEN; + gd->malloc_ptr = 0; +#endif + + return 0; +} + static init_fnc_t init_sequence_f[] = { #ifdef CONFIG_SANDBOX setup_ram_buf, @@ -824,6 +835,7 @@ static init_fnc_t init_sequence_f[] = { sdram_adjust_866, init_timebase, #endif + initf_malloc, init_baud_rate, /* initialze baudrate settings */ serial_init, /* serial communications setup */ console_init_f, /* stage 1 init of console */ diff --git a/common/board_r.c b/common/board_r.c index 4479acb..2298ba5 100644 --- a/common/board_r.c +++ b/common/board_r.c @@ -259,6 +259,10 @@ static int initr_malloc(void) { ulong malloc_start; +#ifdef CONFIG_SYS_MALLOC_F_LEN + debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr, + gd->malloc_ptr / 1024); +#endif /* The malloc area is immediately below the monitor copy in DRAM */ malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN; mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN), diff --git a/common/dlmalloc.c b/common/dlmalloc.c index d1cd561..26ba8fd 100644 --- a/common/dlmalloc.c +++ b/common/dlmalloc.c @@ -930,6 +930,8 @@ struct mallinfo mALLINFo(); #endif /* 0 */ /* Moved to malloc.h */ #include <malloc.h> +#include <asm/io.h> + #ifdef DEBUG #if __STD_C static void malloc_update_mallinfo (void); @@ -2174,6 +2176,20 @@ Void_t* mALLOc(bytes) size_t bytes; INTERNAL_SIZE_T nb; +#ifdef CONFIG_SYS_MALLOC_F_LEN + if (!(gd->flags & GD_FLG_RELOC)) { + ulong new_ptr; + void *ptr; + + new_ptr = gd->malloc_ptr + bytes; + if (new_ptr > gd->malloc_limit) + panic("Out of pre-reloc memory"); + ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes); + gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr)); + return ptr; + } +#endif + /* check if mem_malloc_init() was run */ if ((mem_malloc_start == 0) && (mem_malloc_end == 0)) { /* not initialized yet */ @@ -2437,6 +2453,12 @@ void fREe(mem) Void_t* mem; mchunkptr fwd; /* misc temp for linking */ int islr; /* track whether merging with last_remainder */ +#ifdef CONFIG_SYS_MALLOC_F_LEN + /* free() is a no-op - all the memory will be freed on relocation */ + if (!(gd->flags & GD_FLG_RELOC)) + return; +#endif + if (mem == NULL) /* free(0) has no effect */ return; @@ -2588,6 +2610,13 @@ Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes; /* realloc of null is supposed to be same as malloc */ if (oldmem == NULL) return mALLOc(bytes); +#ifdef CONFIG_SYS_MALLOC_F_LEN + if (!(gd->flags & GD_FLG_RELOC)) { + /* This is harder to support and should not be needed */ + panic("pre-reloc realloc() is not supported"); + } +#endif + newp = oldp = mem2chunk(oldmem); newsize = oldsize = chunksize(oldp); @@ -2933,6 +2962,12 @@ Void_t* cALLOc(n, elem_size) size_t n; size_t elem_size; return NULL; else { +#ifdef CONFIG_SYS_MALLOC_F_LEN + if (!(gd->flags & GD_FLG_RELOC)) { + MALLOC_ZERO(mem, sz); + return mem; + } +#endif p = mem2chunk(mem); /* Two optional cases in which clearing not necessary */ diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h index 2850ed8..f6a2a20 100644 --- a/include/asm-generic/global_data.h +++ b/include/asm-generic/global_data.h @@ -85,6 +85,11 @@ typedef struct global_data { #endif unsigned long timebase_h; unsigned long timebase_l; +#ifdef CONFIG_SYS_MALLOC_F_LEN + unsigned long malloc_base; /* base address of early malloc() */ + unsigned long malloc_limit; /* limit address */ + unsigned long malloc_ptr; /* current address */ +#endif struct arch_global_data arch; /* architecture-specific data */ } gd_t; #endif diff --git a/lib/asm-offsets.c b/lib/asm-offsets.c index 6ea7b03..129bc3e 100644 --- a/lib/asm-offsets.c +++ b/lib/asm-offsets.c @@ -28,6 +28,9 @@ int main(void) DEFINE(GD_SIZE, sizeof(struct global_data)); DEFINE(GD_BD, offsetof(struct global_data, bd)); +#ifdef CONFIG_SYS_MALLOC_F_LEN + DEFINE(GD_MALLOC_BASE, offsetof(struct global_data, malloc_base)); +#endif #if defined(CONFIG_ARM) |