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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7095b95654
Because FIQ handlers get copied straight into the vectors page to the FIQ vector entry point, FIQ handlers in a Thumb-2 kernel must start in Thumb-2. A Thumb-2 kernel enters all exception vectors in Thumb-2. This patch adapts the mxc SSI FIQ code suitable for a Thumb-2 kernel. The code contained use of r13 (sp) which isn't allowed in Thumb-2. r11 and r13 have been swapped throughout the file to work around this. Currently, the way that the function to be copied is located using labels is a bit ugly: we cannot annotate the FIQ handler properly as a Thumb-2 function, because this would set bit 0 of the label address seen by the linker, causing off-by-one errors when copying the function. Ideally, the copy would be done with fncpy(), but this would require changes to the common set_fiq_handler() function. For now, we don't touch this. References to locally-defined global symbols with adr and ldr may not be accepted by the assembler in Thumb-2. Local shadow symbols are added to work around this. Signed-off-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> |
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| .. | ||
| devices | ||
| include/mach | ||
| 3ds_debugboard.c | ||
| avic.c | ||
| clock.c | ||
| cpu.c | ||
| cpufreq.c | ||
| cpuidle.c | ||
| devices.c | ||
| epit.c | ||
| iomux-v1.c | ||
| iomux-v3.c | ||
| iram_alloc.c | ||
| irq-common.c | ||
| irq-common.h | ||
| Kconfig | ||
| Makefile | ||
| ssi-fiq-ksym.c | ||
| ssi-fiq.S | ||
| system.c | ||
| time.c | ||
| tzic.c | ||
| ulpi.c | ||