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armv8: Add global variable resv_ram

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Use gd->arch.resv_ram to track reserved memory allocation.

Signed-off-by: York Sun <york.sun@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
York Sun
2017-03-06 09:02:24 -08:00
parent 8537ddd769
commit f2ccf7f7aa
3 changed files with 21 additions and 0 deletions
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10
arch/arm/cpu/armv8/fsl-layerscape/Kconfig
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@@ -277,6 +277,16 @@ config SYS_FSL_SDHC_CLK_DIV
clock, in another word SDHC_clk = Platform_clk / this_divider.
endmenu
config RESV_RAM
bool
help
Reserve memory from the top, tracked by gd->arch.resv_ram. This
reserved RAM can be used by special driver that resides in memory
after U-Boot exits. It's up to implementation to allocate and allow
access to this reserved memory. For example, the reserved RAM can
be at the high end of physical memory. The reserve RAM may be
excluded from memory bank(s) passed to OS, or marked as reserved.
config SYS_FSL_ERRATUM_A008336
bool