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sandbox: move the TCG event log to the start of ram memory

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The TCG event log buffer is being set at the end of ram memory. This
region of memory is to be reserved as LMB_NOMAP memory in the LMB
memory map. The current location of this buffer overlaps with the
memory region reserved for the U-Boot image, which is at the top of
the usable memory. This worked earlier as the LMB memory map was not
global but caller specific, but fails now because of the overlap.

Move the TCG event log buffer to the start of the ram memory region
instead. Move the location of the early trace buffer and the load
buffer for U-Boot(spl boot) accordingly.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Sughosh Ganu
2024-08-26 17:29:32 +05:30
committed by Tom Rini
parent b58caada60
commit 9b19e207a9
4 changed files with 6 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/sandbox/dts/test.dts
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@@ -78,7 +78,7 @@
event_log: tcg_event_log {
no-map;
reg = <(CFG_SYS_SDRAM_SIZE - 0x2000) 0x2000>;
reg = <(CFG_SYS_SDRAM_BASE + 0x100000) 0x2000>;
};
};

2
configs/sandbox_spl_defconfig
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@@ -1,4 +1,4 @@
CONFIG_TEXT_BASE=0x200000
CONFIG_TEXT_BASE=0x400000
CONFIG_SPL_GPIO=y
CONFIG_SPL_LIBCOMMON_SUPPORT=y
CONFIG_SPL_LIBGENERIC_SUPPORT=y

5
doc/arch/sandbox/sandbox.rst
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@@ -662,7 +662,8 @@ Addr Config Usage
b000 CONFIG_BLOBLIST_ADDR Blob list
10000 CFG_MALLOC_F_ADDR Early memory allocation
f0000 CONFIG_PRE_CON_BUF_ADDR Pre-console buffer
100000 CONFIG_TRACE_EARLY_ADDR Early trace buffer (if enabled). Also used
100000 TCG Event log TCG Event Log
200000 CONFIG_TRACE_EARLY_ADDR Early trace buffer (if enabled). Also used
as the SPL load buffer in spl_test_load().
200000 CONFIG_TEXT_BASE Load buffer for U-Boot (sandbox_spl only)
400000 CONFIG_TEXT_BASE Load buffer for U-Boot (sandbox_spl only)
======= ======================== ===============================

2
lib/Kconfig
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@@ -403,7 +403,7 @@ config TRACE_EARLY_CALL_DEPTH_LIMIT
config TRACE_EARLY_ADDR
hex "Address of early trace buffer in U-Boot"
depends on TRACE_EARLY
default 0x00100000
default 0x00200000
help
Sets the address of the early trace buffer in U-Boot. This memory
must be accessible before relocation.