Joseph Chen
|
ffa8f8b76e
|
lib: introduce sysmem for permanent memory management
U-Boot provides MALLOC for runtime temporary memory management and
LMB for bootm memory management. There is not a mechanism for permanent
memory management. so that the memory blocks are easy to overlap with
each other.
What does permanent memory mean ?
- The memory can't be touched by U-Boot(ATF/OPTEE/SHM/kernel-reserved, etc);
- The memory occupied even in kernel, such as some firmware load buffer;
This patch introduces sysmem to do permanent memory management, which
implements base on LMB. It provides memory block (pool):
- init;
- add;
- alloc;
- free;
- reserve;
- stat;
- overflow check;
Here is an example for RK3399 sysmem boot stat(assume the "fdt" region is Overflow)
called by sysmem_dump_all():
sysmem_dump_all:
------------------------------------------------------
memory.rgn[0].base = 0x00000000
.size = 0x00000000
memory.rgn[1].base = 0x00200000
.size = 0x08200000
memory.rgn[2].base = 0x0a200000
.size = 0x75e00000
memory.total = 0x7e000000 (2016 MiB. 0 KiB)
------------------------------------------------------
reserved.rgn[0].name = "ATF"
.base = 0x00000000
.size = 0x00100000
reserved.rgn[1].name = "PSTORE/ATAGS/SHM"
.base = 0x00100000
.size = 0x00100000
reserved.rgn[2].name = "OP-TEE"
.base = 0x08400000
.size = 0x01e00000
reserved.rgn[3].name = "U-Boot"
.base = 0x71be03c0
.size = 0x0e41fc40
reserved.rgn[4].name = "secure-memory@20000000"
.base = 0x20000000
.size = 0x10000000
reserved.total = 0x2041fc40 (516 MiB. 127 KiB)
------------------------------------------------------
allocated.rgn[0].name = "fdt" (Overflow)
.base = 0x01f00000
.size = 0x00009704
allocated.rgn[1].name = "kernel"
.base = 0x0027c000
.size = 0x0129da04
allocated.rgn[2].name = "ramdisk"
.base = 0x0a200000
.size = 0x001e6c04
allocated.total = 0x0148dd0c (20 MiB. 567 KiB)
------------------------------------------------------
LMB.reserved[0].base = 0x00000000
.size = 0x00200000
LMB.reserved[1].base = 0x0027c000
.size = 0x0129da04
LMB.reserved[2].base = 0x01f00000
.size = 0x00009704
LMB.reserved[3].base = 0x08400000
.size = 0x01fe6c04
LMB.reserved[4].base = 0x20000000
.size = 0x10000000
LMB.reserved[5].base = 0x71be03c0
.size = 0x0e41fc40
reserved.core.total = 0x218ad94c (536 MiB. 694 KiB)
------------------------------------------------------
Change-Id: If63b7abed2cdd3c054719511fcceed733ddf606d
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
|
2019-01-24 15:33:12 +08:00 |