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980d6a5511
Until now we've been using memory beyond psci_text_end as stack space
for the secure monitor or PSCI implementation, even if space was not
allocated for it.
This was partially fixed in ("ARM: allocate extra space for PSCI stack
in secure section during link phase"). However, calculating stack space
from psci_text_end in one place, while allocating the space in another
is error prone.
This patch adds a separate empty secure stack section, with space for
CONFIG_ARMV7_PSCI_NR_CPUS stacks, each 1 KB. There's also
__secure_stack_start and __secure_stack_end symbols. The linker script
handles calculating the correct VMAs for the stack section. For
platforms that relocate/copy the secure monitor before using it, the
space is not allocated in the executable, saving space.
For platforms that do not define CONFIG_ARMV7_PSCI_NR_CPUS, a whole page
of stack space for 4 CPUs is allocated, matching the previous behavior.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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| .. | ||
| ashldi3.S | ||
| ashrdi3.S | ||
| asm-offsets.c | ||
| bootm-fdt.c | ||
| bootm.c | ||
| cache-cp15.c | ||
| cache-pl310.c | ||
| cache.c | ||
| ccn504.S | ||
| cmd_boot.c | ||
| crt0.S | ||
| crt0_64.S | ||
| debug.S | ||
| div0.c | ||
| div64.S | ||
| eabi_compat.c | ||
| gic_64.S | ||
| interrupts.c | ||
| interrupts_64.c | ||
| interrupts_m.c | ||
| lib1funcs.S | ||
| lshrdi3.S | ||
| Makefile | ||
| memcpy.S | ||
| memset.S | ||
| muldi3.S | ||
| relocate.S | ||
| relocate_64.S | ||
| reset.c | ||
| sections.c | ||
| semihosting.c | ||
| spl.c | ||
| stack.c | ||
| uldivmod.S | ||
| vectors.S | ||
| vectors_m.S | ||