Sean Anderson f760c9a1fd riscv: Use a valid bit to ignore already-pending IPIs ... Some IPIs may already be pending when U-Boot is started. This could be a problem if a secondary hart tries to handle an IPI before the boot hart has initialized the IPI device. To be specific, the Kendryte K210 ROM-based bootloader does not clear IPIs before passing control to U-Boot. Without this patch, the secondary hart jumps to address 0x0 as soon as it enters secondary_hart_loop, and then hangs in its trap handler. This commit introduces a valid bit so secondary harts know when and IPI originates from U-Boot, and it is safe to use the IPI API. The valid bit is initialized to 0 by board_init_f_init_reserve. Before this, secondary harts wait in wait_for_gd_init. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Leo Liang <ycliang@andestech.com>		2020-09-30 08:54:52 +08:00
..
andes_plic.c	riscv: Clean up initialization in Andes PLIC	2020-09-30 08:54:46 +08:00
andes_plmt.c	riscv: Rework Andes PLMT as a UCLASS_TIMER driver	2020-09-30 08:54:45 +08:00
asm-offsets.c	riscv: Provide a mechanism to fix DT for reserved memory	2020-04-23 10:14:16 +08:00
boot.c	command: Remove the cmd_tbl_t typedef	2020-05-18 18:36:55 -04:00
bootm.c	common: Drop log.h from common header	2020-05-18 21:19:18 -04:00
cache.c	common: Move some cache and MMU functions out of common.h	2019-12-02 18:23:55 -05:00
crt0_riscv_efi.S	efi_loader: use predefined constants in crt0_*_efi.S	2019-07-16 22:17:14 +00:00
elf_riscv32_efi.lds	SPDX: Convert single license tags to Linux Kernel style	2018-05-29 14:44:21 +08:00
elf_riscv64_efi.lds	SPDX: Convert single license tags to Linux Kernel style	2018-05-29 14:44:21 +08:00
fdt_fixup.c	fdtdec: optionally add property no-map to created reserved memory node	2020-09-22 12:54:13 -06:00
image.c	common: Drop image.h from common header	2020-05-18 17:33:33 -04:00
interrupts.c	riscv: additional crash information	2020-08-14 14:39:41 +08:00
Makefile	riscv: Rework riscv timer driver to only support S-mode	2020-09-30 08:54:45 +08:00
mkimage_fit_opensbi.sh	riscv: add a generic FIT generator script	2019-08-26 16:07:42 +08:00
reloc_riscv_efi.c	riscv: Remove unused _relocate arguments	2018-07-19 16:31:37 -04:00
reset.c	Revert "riscv: Allow use of reset drivers"	2020-07-24 14:55:31 +08:00
sbi.c	cmd: provide command sbi	2020-08-25 09:34:47 +08:00
sbi_ipi.c	riscv: Clean up IPI initialization code	2020-07-01 15:01:22 +08:00
setjmp.S	riscv: rename CPU_RISCV_32/64 to match architecture names ARCH_RV32I/64I	2018-11-26 13:57:29 +08:00
sifive_clint.c	riscv: Rework Sifive CLINT as UCLASS_TIMER driver	2020-09-30 08:54:46 +08:00
smp.c	riscv: Use a valid bit to ignore already-pending IPIs	2020-09-30 08:54:52 +08:00
spl.c	riscv: fix building with CONFIG_SPL_SMP=n	2020-08-25 09:33:45 +08:00