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lmb: make LMB memory map persistent and global

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The current LMB API's for allocating and reserving memory use a
per-caller based memory view. Memory allocated by a caller can then be
overwritten by another caller. Make these allocations and reservations
persistent using the alloced list data structure.

Two alloced lists are declared -- one for the available(free) memory,
and one for the used memory. Once full, the list can then be extended
at runtime.

[sjg: Use a stack to store pointer of lmb struct when running lmb tests]

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
[sjg: Optimise the logic to add a region in lmb_add_region_flags()]
This commit is contained in:
Sughosh Ganu
2024-08-26 17:29:18 +05:30
committed by Tom Rini
parent a368850ae2
commit ed17a33fed
39 changed files with 717 additions and 749 deletions
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28
include/image.h
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@@ -20,7 +20,6 @@
#include <stdbool.h>
/* Define this to avoid #ifdefs later on */
struct lmb;
struct fdt_region;
#ifdef USE_HOSTCC
@@ -412,18 +411,8 @@ struct bootm_headers {
#define BOOTM_STATE_PRE_LOAD 0x00000800
#define BOOTM_STATE_MEASURE 0x00001000
int state;
#if defined(CONFIG_LMB) && !defined(USE_HOSTCC)
struct lmb lmb; /* for memory mgmt */
#endif
};
#ifdef CONFIG_LMB
#define images_lmb(_images) (&(_images)->lmb)
#else
#define images_lmb(_images) NULL
#endif
extern struct bootm_headers images;
/*
@@ -835,13 +824,13 @@ int boot_get_fdt(void *buf, const char *select, uint arch,
struct bootm_headers *images, char **of_flat_tree,
ulong *of_size);
void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob);
int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size);
void boot_fdt_add_mem_rsv_regions(void *fdt_blob);
int boot_relocate_fdt(char **of_flat_tree, ulong *of_size);
int boot_ramdisk_high(struct lmb *lmb, ulong rd_data, ulong rd_len,
ulong *initrd_start, ulong *initrd_end);
int boot_get_cmdline(struct lmb *lmb, ulong *cmd_start, ulong *cmd_end);
int boot_get_kbd(struct lmb *lmb, struct bd_info **kbd);
int boot_ramdisk_high(ulong rd_data, ulong rd_len, ulong *initrd_start,
ulong *initrd_end);
int boot_get_cmdline(ulong *cmd_start, ulong *cmd_end);
int boot_get_kbd(struct bd_info **kbd);
/*******************************************************************/
/* Legacy format specific code (prefixed with image_) */
@@ -1029,11 +1018,10 @@ int image_decomp(int comp, ulong load, ulong image_start, int type,
*
* @images: Images information
* @blob: FDT to update
* @lmb: Points to logical memory block structure
* @lmb: Flag indicating use of lmb for reserving FDT memory region
* Return: 0 if ok, <0 on failure
*/
int image_setup_libfdt(struct bootm_headers *images, void *blob,
struct lmb *lmb);
int image_setup_libfdt(struct bootm_headers *images, void *blob, bool lmb);
/**
* Set up the FDT to use for booting a kernel