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ARM: fiq_glue: Add fiq_glue

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Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com>
Change-Id: I27d2554e07d9de204e0a06696d38db51608d9f6b
This commit is contained in:
Huibin Hong
2022-03-23 03:11:52 +00:00
committed by Tao Huang
parent 0467bb65b8
commit f6e083bcf5
5 changed files with 17 additions and 3 deletions
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4
arch/arm/common/Kconfig
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@@ -18,3 +18,7 @@ config SHARP_PARAM
config SHARP_SCOOP config SHARP_SCOOP
bool bool
config FIQ_GLUE
bool
select FIQ

1
arch/arm/common/Makefile
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@@ -5,6 +5,7 @@
obj-y += firmware.o obj-y += firmware.o
obj-$(CONFIG_FIQ_GLUE) += fiq_glue.o fiq_glue_setup.o
obj-$(CONFIG_SA1111) += sa1111.o obj-$(CONFIG_SA1111) += sa1111.o
obj-$(CONFIG_DMABOUNCE) += dmabounce.o obj-$(CONFIG_DMABOUNCE) += dmabounce.o
obj-$(CONFIG_KRAIT_L2_ACCESSORS) += krait-l2-accessors.o obj-$(CONFIG_KRAIT_L2_ACCESSORS) += krait-l2-accessors.o

4
arch/arm/common/fiq_glue_setup.c
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@@ -33,7 +33,7 @@ static void fiq_glue_setup_helper(void *info)
{ {
struct fiq_glue_handler *handler = info; struct fiq_glue_handler *handler = info;
fiq_glue_setup(handler->fiq, handler, fiq_glue_setup(handler->fiq, handler,
__get_cpu_var(fiq_stack) + THREAD_START_SP, (void *)((*this_cpu_ptr(&fiq_stack)) + THREAD_START_SP),
fiq_return_handler); fiq_return_handler);
} }
@@ -139,7 +139,7 @@ void fiq_glue_resume(void)
if (!current_handler) if (!current_handler)
return; return;
fiq_glue_setup(current_handler->fiq, current_handler, fiq_glue_setup(current_handler->fiq, current_handler,
__get_cpu_var(fiq_stack) + THREAD_START_SP, (void *)((*this_cpu_ptr(&fiq_stack)) + THREAD_START_SP),
fiq_return_handler); fiq_return_handler);
if (current_handler->resume) if (current_handler->resume)
current_handler->resume(current_handler); current_handler->resume(current_handler);

3
arch/arm/kernel/fiq.c
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@@ -94,8 +94,9 @@ int show_fiq_list(struct seq_file *p, int prec)
void set_fiq_handler(void *start, unsigned int length) void set_fiq_handler(void *start, unsigned int length)
{ {
void *base = vectors_page; void *base = vectors_page;
unsigned offset = FIQ_OFFSET; unsigned int volatile offset = FIQ_OFFSET;
offset &= 0xfffffffc;
memcpy(base + offset, start, length); memcpy(base + offset, start, length);
if (!cache_is_vipt_nonaliasing()) if (!cache_is_vipt_nonaliasing())
flush_icache_range((unsigned long)base + offset, flush_icache_range((unsigned long)base + offset,

8
drivers/staging/android/fiq_debugger/Kconfig
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@@ -70,3 +70,11 @@ config RK_CONSOLE_THREAD
default n default n
help help
Normal kernel printk will write out to UART by "kconsole" kthread Normal kernel printk will write out to UART by "kconsole" kthread
config FIQ_DEBUGGER_FIQ_GLUE
bool "Uart FIQ is captured by linux"
depends on FIQ_DEBUGGER
select FIQ_GLUE
default n
help
It is for ARM v7 arch without trust zone.