[PATCH 1/3] lib: sbi: Replace args with trap registers in ecall handler
Atish Patra
atishp at atishpatra.org
Tue Jan 5 21:37:13 EST 2021
On Tue, Dec 29, 2020 at 7:34 PM Anup Patel <anup.patel at wdc.com> wrote:
>
> We had added args pointer in ecall handler to ensure that ecall
> handler only implements functionality and does not deal with
> SBI calling convention. This also helped us to keep SBI calling
> convention related code in one place at sbi_ecall_handler().
>
> The Keystone Enclavce project needs access to the trap regsiters
> in their ecall handler so that they can context switch enclaves
> in custom SBI calls. To help the Keystone Enclave project, we
> replace the args pointer in ecall handler parameter with a const
> pointer to trap registers.
>
Yeah. This is much simpler. Thanks.
Reviewed-by: Atish Patra <atish.patra at wdc.com>
> Signed-off-by: Anup Patel <anup.patel at wdc.com>
> ---
> include/sbi/sbi_ecall.h | 3 +-
> include/sbi/sbi_platform.h | 9 ++---
> lib/sbi/sbi_ecall.c | 10 +-----
> lib/sbi/sbi_ecall_base.c | 6 ++--
> lib/sbi/sbi_ecall_hsm.c | 8 +++--
> lib/sbi/sbi_ecall_legacy.c | 25 +++++++-------
> lib/sbi/sbi_ecall_replace.c | 59 ++++++++++++++++++---------------
> lib/sbi/sbi_ecall_vendor.c | 6 ++--
> platform/andes/ae350/platform.c | 19 ++++++-----
> 9 files changed, 76 insertions(+), 69 deletions(-)
>
> diff --git a/include/sbi/sbi_ecall.h b/include/sbi/sbi_ecall.h
> index 1ef86e2..d357085 100644
> --- a/include/sbi/sbi_ecall.h
> +++ b/include/sbi/sbi_ecall.h
> @@ -26,7 +26,8 @@ struct sbi_ecall_extension {
> unsigned long extid_end;
> int (* probe)(unsigned long extid, unsigned long *out_val);
> int (* handle)(unsigned long extid, unsigned long funcid,
> - unsigned long *args, unsigned long *out_val,
> + const struct sbi_trap_regs *regs,
> + unsigned long *out_val,
> struct sbi_trap_info *out_trap);
> };
>
> diff --git a/include/sbi/sbi_platform.h b/include/sbi/sbi_platform.h
> index 58aba71..7b8fe89 100644
> --- a/include/sbi/sbi_platform.h
> +++ b/include/sbi/sbi_platform.h
> @@ -47,6 +47,7 @@
>
> struct sbi_domain;
> struct sbi_trap_info;
> +struct sbi_trap_regs;
>
> /** Possible feature flags of a platform */
> enum sbi_platform_features {
> @@ -146,7 +147,7 @@ struct sbi_platform_operations {
> int (*vendor_ext_check)(long extid);
> /** platform specific SBI extension implementation provider */
> int (*vendor_ext_provider)(long extid, long funcid,
> - unsigned long *args,
> + const struct sbi_trap_regs *regs,
> unsigned long *out_value,
> struct sbi_trap_info *out_trap);
> } __packed;
> @@ -710,7 +711,7 @@ static inline int sbi_platform_vendor_ext_check(const struct sbi_platform *plat,
> * @param plat pointer to struct sbi_platform
> * @param extid vendor SBI extension id
> * @param funcid SBI function id within the extension id
> - * @param args pointer to arguments passed by the caller
> + * @param regs pointer to trap registers passed by the caller
> * @param out_value output value that can be filled by the callee
> * @param out_trap trap info that can be filled by the callee
> *
> @@ -719,13 +720,13 @@ static inline int sbi_platform_vendor_ext_check(const struct sbi_platform *plat,
> static inline int sbi_platform_vendor_ext_provider(
> const struct sbi_platform *plat,
> long extid, long funcid,
> - unsigned long *args,
> + const struct sbi_trap_regs *regs,
> unsigned long *out_value,
> struct sbi_trap_info *out_trap)
> {
> if (plat && sbi_platform_ops(plat)->vendor_ext_provider) {
> return sbi_platform_ops(plat)->vendor_ext_provider(extid,
> - funcid, args,
> + funcid, regs,
> out_value,
> out_trap);
> }
> diff --git a/lib/sbi/sbi_ecall.c b/lib/sbi/sbi_ecall.c
> index 6d41cff..e92a539 100644
> --- a/lib/sbi/sbi_ecall.c
> +++ b/lib/sbi/sbi_ecall.c
> @@ -101,19 +101,11 @@ int sbi_ecall_handler(struct sbi_trap_regs *regs)
> struct sbi_trap_info trap = {0};
> unsigned long out_val = 0;
> bool is_0_1_spec = 0;
> - unsigned long args[6];
> -
> - args[0] = regs->a0;
> - args[1] = regs->a1;
> - args[2] = regs->a2;
> - args[3] = regs->a3;
> - args[4] = regs->a4;
> - args[5] = regs->a5;
>
> ext = sbi_ecall_find_extension(extension_id);
> if (ext && ext->handle) {
> ret = ext->handle(extension_id, func_id,
> - args, &out_val, &trap);
> + regs, &out_val, &trap);
> if (extension_id >= SBI_EXT_0_1_SET_TIMER &&
> extension_id <= SBI_EXT_0_1_SHUTDOWN)
> is_0_1_spec = 1;
> diff --git a/lib/sbi/sbi_ecall_base.c b/lib/sbi/sbi_ecall_base.c
> index 53c93c8..786d2ac 100644
> --- a/lib/sbi/sbi_ecall_base.c
> +++ b/lib/sbi/sbi_ecall_base.c
> @@ -11,6 +11,7 @@
> #include <sbi/sbi_ecall.h>
> #include <sbi/sbi_ecall_interface.h>
> #include <sbi/sbi_error.h>
> +#include <sbi/sbi_trap.h>
> #include <sbi/sbi_version.h>
> #include <sbi/riscv_asm.h>
>
> @@ -32,7 +33,8 @@ static int sbi_ecall_base_probe(unsigned long extid, unsigned long *out_val)
> }
>
> static int sbi_ecall_base_handler(unsigned long extid, unsigned long funcid,
> - unsigned long *args, unsigned long *out_val,
> + const struct sbi_trap_regs *regs,
> + unsigned long *out_val,
> struct sbi_trap_info *out_trap)
> {
> int ret = 0;
> @@ -61,7 +63,7 @@ static int sbi_ecall_base_handler(unsigned long extid, unsigned long funcid,
> *out_val = csr_read(CSR_MIMPID);
> break;
> case SBI_EXT_BASE_PROBE_EXT:
> - ret = sbi_ecall_base_probe(args[0], out_val);
> + ret = sbi_ecall_base_probe(regs->a0, out_val);
> break;
> default:
> ret = SBI_ENOTSUPP;
> diff --git a/lib/sbi/sbi_ecall_hsm.c b/lib/sbi/sbi_ecall_hsm.c
> index 376740c..df29d51 100644
> --- a/lib/sbi/sbi_ecall_hsm.c
> +++ b/lib/sbi/sbi_ecall_hsm.c
> @@ -11,13 +11,15 @@
> #include <sbi/sbi_ecall.h>
> #include <sbi/sbi_ecall_interface.h>
> #include <sbi/sbi_error.h>
> +#include <sbi/sbi_trap.h>
> #include <sbi/sbi_version.h>
> #include <sbi/sbi_hsm.h>
> #include <sbi/sbi_scratch.h>
> #include <sbi/riscv_asm.h>
>
> static int sbi_ecall_hsm_handler(unsigned long extid, unsigned long funcid,
> - unsigned long *args, unsigned long *out_val,
> + const struct sbi_trap_regs *regs,
> + unsigned long *out_val,
> struct sbi_trap_info *out_trap)
> {
> ulong smode;
> @@ -29,14 +31,14 @@ static int sbi_ecall_hsm_handler(unsigned long extid, unsigned long funcid,
> smode = csr_read(CSR_MSTATUS);
> smode = (smode & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT;
> ret = sbi_hsm_hart_start(scratch, sbi_domain_thishart_ptr(),
> - args[0], args[1], smode, args[2]);
> + regs->a0, regs->a1, smode, regs->a2);
> break;
> case SBI_EXT_HSM_HART_STOP:
> ret = sbi_hsm_hart_stop(scratch, TRUE);
> break;
> case SBI_EXT_HSM_HART_GET_STATUS:
> hstate = sbi_hsm_hart_get_state(sbi_domain_thishart_ptr(),
> - args[0]);
> + regs->a0);
> ret = sbi_hsm_hart_state_to_status(hstate);
> break;
> default:
> diff --git a/lib/sbi/sbi_ecall_legacy.c b/lib/sbi/sbi_ecall_legacy.c
> index 7844fbb..8afeb00 100644
> --- a/lib/sbi/sbi_ecall_legacy.c
> +++ b/lib/sbi/sbi_ecall_legacy.c
> @@ -43,7 +43,8 @@ static int sbi_load_hart_mask_unpriv(ulong *pmask, ulong *hmask,
> }
>
> static int sbi_ecall_legacy_handler(unsigned long extid, unsigned long funcid,
> - unsigned long *args, unsigned long *out_val,
> + const struct sbi_trap_regs *regs,
> + unsigned long *out_val,
> struct sbi_trap_info *out_trap)
> {
> int ret = 0;
> @@ -54,13 +55,13 @@ static int sbi_ecall_legacy_handler(unsigned long extid, unsigned long funcid,
> switch (extid) {
> case SBI_EXT_0_1_SET_TIMER:
> #if __riscv_xlen == 32
> - sbi_timer_event_start((((u64)args[1] << 32) | (u64)args[0]));
> + sbi_timer_event_start((((u64)regs->a1 << 32) | (u64)regs->a0));
> #else
> - sbi_timer_event_start((u64)args[0]);
> + sbi_timer_event_start((u64)regs->a0);
> #endif
> break;
> case SBI_EXT_0_1_CONSOLE_PUTCHAR:
> - sbi_putc(args[0]);
> + sbi_putc(regs->a0);
> break;
> case SBI_EXT_0_1_CONSOLE_GETCHAR:
> ret = sbi_getc();
> @@ -69,13 +70,13 @@ static int sbi_ecall_legacy_handler(unsigned long extid, unsigned long funcid,
> sbi_ipi_clear_smode();
> break;
> case SBI_EXT_0_1_SEND_IPI:
> - ret = sbi_load_hart_mask_unpriv((ulong *)args[0],
> + ret = sbi_load_hart_mask_unpriv((ulong *)regs->a0,
> &hmask, out_trap);
> if (ret != SBI_ETRAP)
> ret = sbi_ipi_send_smode(hmask, 0);
> break;
> case SBI_EXT_0_1_REMOTE_FENCE_I:
> - ret = sbi_load_hart_mask_unpriv((ulong *)args[0],
> + ret = sbi_load_hart_mask_unpriv((ulong *)regs->a0,
> &hmask, out_trap);
> if (ret != SBI_ETRAP) {
> SBI_TLB_INFO_INIT(&tlb_info, 0, 0, 0, 0,
> @@ -84,21 +85,21 @@ static int sbi_ecall_legacy_handler(unsigned long extid, unsigned long funcid,
> }
> break;
> case SBI_EXT_0_1_REMOTE_SFENCE_VMA:
> - ret = sbi_load_hart_mask_unpriv((ulong *)args[0],
> + ret = sbi_load_hart_mask_unpriv((ulong *)regs->a0,
> &hmask, out_trap);
> if (ret != SBI_ETRAP) {
> - SBI_TLB_INFO_INIT(&tlb_info, args[1], args[2], 0, 0,
> + SBI_TLB_INFO_INIT(&tlb_info, regs->a1, regs->a2, 0, 0,
> SBI_TLB_FLUSH_VMA, source_hart);
> ret = sbi_tlb_request(hmask, 0, &tlb_info);
> }
> break;
> case SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID:
> - ret = sbi_load_hart_mask_unpriv((ulong *)args[0],
> + ret = sbi_load_hart_mask_unpriv((ulong *)regs->a0,
> &hmask, out_trap);
> if (ret != SBI_ETRAP) {
> - SBI_TLB_INFO_INIT(&tlb_info, args[1], args[2], args[3],
> - 0, SBI_TLB_FLUSH_VMA_ASID,
> - source_hart);
> + SBI_TLB_INFO_INIT(&tlb_info, regs->a1,
> + regs->a2, regs->a3, 0,
> + SBI_TLB_FLUSH_VMA_ASID, source_hart);
> ret = sbi_tlb_request(hmask, 0, &tlb_info);
> }
> break;
> diff --git a/lib/sbi/sbi_ecall_replace.c b/lib/sbi/sbi_ecall_replace.c
> index d06dfa2..a95821b 100644
> --- a/lib/sbi/sbi_ecall_replace.c
> +++ b/lib/sbi/sbi_ecall_replace.c
> @@ -17,18 +17,20 @@
> #include <sbi/sbi_system.h>
> #include <sbi/sbi_timer.h>
> #include <sbi/sbi_tlb.h>
> +#include <sbi/sbi_trap.h>
>
> static int sbi_ecall_time_handler(unsigned long extid, unsigned long funcid,
> - unsigned long *args, unsigned long *out_val,
> + const struct sbi_trap_regs *regs,
> + unsigned long *out_val,
> struct sbi_trap_info *out_trap)
> {
> int ret = 0;
>
> if (funcid == SBI_EXT_TIME_SET_TIMER) {
> #if __riscv_xlen == 32
> - sbi_timer_event_start((((u64)args[1] << 32) | (u64)args[0]));
> + sbi_timer_event_start((((u64)regs->a1 << 32) | (u64)regs->a0));
> #else
> - sbi_timer_event_start((u64)args[0]);
> + sbi_timer_event_start((u64)regs->a0);
> #endif
> } else
> ret = SBI_ENOTSUPP;
> @@ -43,7 +45,8 @@ struct sbi_ecall_extension ecall_time = {
> };
>
> static int sbi_ecall_rfence_handler(unsigned long extid, unsigned long funcid,
> - unsigned long *args, unsigned long *out_val,
> + const struct sbi_trap_regs *regs,
> + unsigned long *out_val,
> struct sbi_trap_info *out_trap)
> {
> int ret = 0;
> @@ -60,41 +63,41 @@ static int sbi_ecall_rfence_handler(unsigned long extid, unsigned long funcid,
> case SBI_EXT_RFENCE_REMOTE_FENCE_I:
> SBI_TLB_INFO_INIT(&tlb_info, 0, 0, 0, 0,
> SBI_ITLB_FLUSH, source_hart);
> - ret = sbi_tlb_request(args[0], args[1], &tlb_info);
> + ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
> break;
> case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA:
> - SBI_TLB_INFO_INIT(&tlb_info, args[2], args[3], 0, 0,
> + SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, 0, 0,
> SBI_TLB_FLUSH_GVMA, source_hart);
> - ret = sbi_tlb_request(args[0], args[1], &tlb_info);
> + ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
> break;
> case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID:
> - SBI_TLB_INFO_INIT(&tlb_info, args[2], args[3], 0, args[4],
> + SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, 0, regs->a4,
> SBI_TLB_FLUSH_GVMA_VMID, source_hart);
> - ret = sbi_tlb_request(args[0], args[1], &tlb_info);
> + ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
> break;
> case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA:
> vmid = (csr_read(CSR_HGATP) & HGATP_VMID_MASK);
> vmid = vmid >> HGATP_VMID_SHIFT;
> - SBI_TLB_INFO_INIT(&tlb_info, args[2], args[3], 0, vmid,
> + SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, 0, vmid,
> SBI_TLB_FLUSH_VVMA, source_hart);
> - ret = sbi_tlb_request(args[0], args[1], &tlb_info);
> + ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
> break;
> case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID:
> vmid = (csr_read(CSR_HGATP) & HGATP_VMID_MASK);
> vmid = vmid >> HGATP_VMID_SHIFT;
> - SBI_TLB_INFO_INIT(&tlb_info, args[2], args[3], args[4], vmid,
> - SBI_TLB_FLUSH_VVMA_ASID, source_hart);
> - ret = sbi_tlb_request(args[0], args[1], &tlb_info);
> + SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, regs->a4,
> + vmid, SBI_TLB_FLUSH_VVMA_ASID, source_hart);
> + ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
> break;
> case SBI_EXT_RFENCE_REMOTE_SFENCE_VMA:
> - SBI_TLB_INFO_INIT(&tlb_info, args[2], args[3], 0, 0,
> + SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, 0, 0,
> SBI_TLB_FLUSH_VMA, source_hart);
> - ret = sbi_tlb_request(args[0], args[1], &tlb_info);
> + ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
> break;
> case SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID:
> - SBI_TLB_INFO_INIT(&tlb_info, args[2], args[3], args[4], 0,
> + SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, regs->a4, 0,
> SBI_TLB_FLUSH_VMA_ASID, source_hart);
> - ret = sbi_tlb_request(args[0], args[1], &tlb_info);
> + ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
> break;
> default:
> ret = SBI_ENOTSUPP;
> @@ -110,13 +113,14 @@ struct sbi_ecall_extension ecall_rfence = {
> };
>
> static int sbi_ecall_ipi_handler(unsigned long extid, unsigned long funcid,
> - unsigned long *args, unsigned long *out_val,
> + const struct sbi_trap_regs *regs,
> + unsigned long *out_val,
> struct sbi_trap_info *out_trap)
> {
> int ret = 0;
>
> if (funcid == SBI_EXT_IPI_SEND_IPI)
> - ret = sbi_ipi_send_smode(args[0], args[1]);
> + ret = sbi_ipi_send_smode(regs->a0, regs->a1);
> else
> ret = SBI_ENOTSUPP;
>
> @@ -130,15 +134,16 @@ struct sbi_ecall_extension ecall_ipi = {
> };
>
> static int sbi_ecall_srst_handler(unsigned long extid, unsigned long funcid,
> - unsigned long *args, unsigned long *out_val,
> + const struct sbi_trap_regs *regs,
> + unsigned long *out_val,
> struct sbi_trap_info *out_trap)
> {
> if (funcid == SBI_EXT_SRST_RESET) {
> - if ((((u32)-1U) <= ((u64)args[0])) ||
> - (((u32)-1U) <= ((u64)args[1])))
> + if ((((u32)-1U) <= ((u64)regs->a0)) ||
> + (((u32)-1U) <= ((u64)regs->a1)))
> return SBI_EINVAL;
>
> - switch (args[0]) {
> + switch (regs->a0) {
> case SBI_SRST_RESET_TYPE_SHUTDOWN:
> case SBI_SRST_RESET_TYPE_COLD_REBOOT:
> case SBI_SRST_RESET_TYPE_WARM_REBOOT:
> @@ -147,7 +152,7 @@ static int sbi_ecall_srst_handler(unsigned long extid, unsigned long funcid,
> return SBI_ENOTSUPP;
> }
>
> - switch (args[1]) {
> + switch (regs->a1) {
> case SBI_SRST_RESET_REASON_NONE:
> case SBI_SRST_RESET_REASON_SYSFAIL:
> break;
> @@ -155,8 +160,8 @@ static int sbi_ecall_srst_handler(unsigned long extid, unsigned long funcid,
> return SBI_ENOTSUPP;
> }
>
> - if (sbi_system_reset_supported(args[0], args[1]))
> - sbi_system_reset(args[0], args[1]);
> + if (sbi_system_reset_supported(regs->a0, regs->a1))
> + sbi_system_reset(regs->a0, regs->a1);
> }
>
> return SBI_ENOTSUPP;
> diff --git a/lib/sbi/sbi_ecall_vendor.c b/lib/sbi/sbi_ecall_vendor.c
> index 34c0be6..9252829 100644
> --- a/lib/sbi/sbi_ecall_vendor.c
> +++ b/lib/sbi/sbi_ecall_vendor.c
> @@ -12,6 +12,7 @@
> #include <sbi/sbi_ecall_interface.h>
> #include <sbi/sbi_error.h>
> #include <sbi/sbi_platform.h>
> +#include <sbi/sbi_trap.h>
>
> static int sbi_ecall_vendor_probe(unsigned long extid,
> unsigned long *out_val)
> @@ -22,11 +23,12 @@ static int sbi_ecall_vendor_probe(unsigned long extid,
> }
>
> static int sbi_ecall_vendor_handler(unsigned long extid, unsigned long funcid,
> - unsigned long *args, unsigned long *out_val,
> + const struct sbi_trap_regs *regs,
> + unsigned long *out_val,
> struct sbi_trap_info *out_trap)
> {
> return sbi_platform_vendor_ext_provider(sbi_platform_thishart_ptr(),
> - extid, funcid, args,
> + extid, funcid, regs,
> out_val, out_trap);
> }
>
> diff --git a/platform/andes/ae350/platform.c b/platform/andes/ae350/platform.c
> index 6d6ce4e..aec91cd 100644
> --- a/platform/andes/ae350/platform.c
> +++ b/platform/andes/ae350/platform.c
> @@ -13,6 +13,7 @@
> #include <sbi/sbi_console.h>
> #include <sbi/sbi_const.h>
> #include <sbi/sbi_platform.h>
> +#include <sbi/sbi_trap.h>
> #include <sbi_utils/fdt/fdt_fixup.h>
> #include <sbi_utils/irqchip/plic.h>
> #include <sbi_utils/serial/uart8250.h>
> @@ -116,7 +117,7 @@ static int ae350_timer_init(bool cold_boot)
>
> /* Vendor-Specific SBI handler */
> static int ae350_vendor_ext_provider(long extid, long funcid,
> - unsigned long *args, unsigned long *out_value,
> + const struct sbi_trap_regs *regs, unsigned long *out_value,
> struct sbi_trap_info *out_trap)
> {
> int ret = 0;
> @@ -128,28 +129,28 @@ static int ae350_vendor_ext_provider(long extid, long funcid,
> *out_value = csr_read(CSR_MMISCCTL);
> break;
> case SBI_EXT_ANDES_SET_MCACHE_CTL:
> - ret = mcall_set_mcache_ctl(args[0]);
> + ret = mcall_set_mcache_ctl(regs->a0);
> break;
> case SBI_EXT_ANDES_SET_MMISC_CTL:
> - ret = mcall_set_mmisc_ctl(args[0]);
> + ret = mcall_set_mmisc_ctl(regs->a0);
> break;
> case SBI_EXT_ANDES_ICACHE_OP:
> - ret = mcall_icache_op(args[0]);
> + ret = mcall_icache_op(regs->a0);
> break;
> case SBI_EXT_ANDES_DCACHE_OP:
> - ret = mcall_dcache_op(args[0]);
> + ret = mcall_dcache_op(regs->a0);
> break;
> case SBI_EXT_ANDES_L1CACHE_I_PREFETCH:
> - ret = mcall_l1_cache_i_prefetch_op(args[0]);
> + ret = mcall_l1_cache_i_prefetch_op(regs->a0);
> break;
> case SBI_EXT_ANDES_L1CACHE_D_PREFETCH:
> - ret = mcall_l1_cache_d_prefetch_op(args[0]);
> + ret = mcall_l1_cache_d_prefetch_op(regs->a0);
> break;
> case SBI_EXT_ANDES_NON_BLOCKING_LOAD_STORE:
> - ret = mcall_non_blocking_load_store(args[0]);
> + ret = mcall_non_blocking_load_store(regs->a0);
> break;
> case SBI_EXT_ANDES_WRITE_AROUND:
> - ret = mcall_write_around(args[0]);
> + ret = mcall_write_around(regs->a0);
> break;
> default:
> sbi_printf("Unsupported vendor sbi call : %ld\n", funcid);
> --
> 2.25.1
>
>
> --
> opensbi mailing list
> opensbi at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/opensbi
--
Regards,
Atish
More information about the opensbi
mailing list