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Merge patch series "sandbox: align LMB memory"

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Heinrich Schuchardt <heinrich.schuchardt@canonical.com> says:

To implement the EFI_SYSTEM_TABLE_POINTER we need 4 MiB aligned
memory.

On the sandbox LMB uses addresses relative to the start of a page aligned
RAM buffer allocated with mmap(). This leads to a mismatch of alignment
between EFI which uses pointers and LMB which uses phys_addr_t.

Ensure that the RAM buffer used for LMB is 4 MiB aligned.

Provide a unit test for efi_alloc_aligned_pages() verifying this alignment.

Do not overwrite RAM size in dram_init().

Link: https://lore.kernel.org/r/20250608075428.32631-1-heinrich.schuchardt@canonical.com
This commit is contained in:
Tom Rini
2025-06-26 13:45:43 -06:00
parent 7d4eacb0e6 788df05362
commit 778c552f86
6 changed files with 71 additions and 4 deletions
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2
include/configs/sandbox.h
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@@ -14,6 +14,8 @@
#define CFG_SYS_SDRAM_BASE 0
#define CFG_SYS_SDRAM_SIZE \
(SB_TO_UL(CONFIG_SANDBOX_RAM_SIZE_MB) << 20)
/** define SB_SDRAM_ALIGN - Alignment of emulated RAM */
#define SB_SDRAM_ALIGN 0x400000
#define CFG_SYS_BAUDRATE_TABLE {4800, 9600, 19200, 38400, 57600,\
115200}