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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
View file

@ -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

7
arch/arm/include/asm/global_data.h
View file

@ -59,6 +59,13 @@ struct arch_global_data {
phys_addr_t secure_ram;
unsigned long tlb_allocated;
#endif
#ifdef CONFIG_RESV_RAM
/*
* Reserved RAM for memory resident, eg. Management Complex (MC)
* driver which continues to run after U-Boot exits.
*/
phys_addr_t resv_ram;
#endif
#ifdef CONFIG_ARCH_OMAP2
u32 omap_boot_device;

4
cmd/bdinfo.c
View file

@ -392,6 +392,10 @@ static int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc,
gd->arch.secure_ram & MEM_RESERVE_SECURE_ADDR_MASK);
}
#endif
#ifdef CONFIG_RESV_RAM
if (gd->arch.resv_ram)
print_num("Reserved ram", gd->arch.resv_ram);
#endif
#if defined(CONFIG_CMD_NET) && !defined(CONFIG_DM_ETH)
print_eths();
#endif