Jonathan Neuschäfer (j.neuschaefer@gmx.net) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17057
-gerrit
commit f71bf99c453b1ff5d2b99d9b66c1d85b1c489284 Author: Jonathan Neuschäfer j.neuschaefer@gmx.net Date: Fri Oct 28 00:25:02 2016 +0200
riscv: Unify SBI call implementations under arch/riscv/
Note that currently, traps are only handled by the trap handler installed in the bootblock. The romstage and ramstage don't override it.
TEST=Booted emulation/spike-qemu and lowrisc/nexys4ddr with a linux payload. It worked as much as before (Linux didn't boot, but it made some successful SBI calls)
Change-Id: Icce96ab3f41ae0f34bd86e30f9ff17c30317854e Signed-off-by: Jonathan Neuschäfer j.neuschaefer@gmx.net --- src/arch/riscv/Makefile.inc | 2 +- src/arch/riscv/include/mcall.h | 70 +++++++++++++++ src/arch/riscv/include/spike_util.h | 70 --------------- src/arch/riscv/mcall.c | 101 ++++++++++++++++++++++ src/arch/riscv/trap_handler.c | 2 +- src/mainboard/emulation/qemu-riscv/Makefile.inc | 3 - src/mainboard/emulation/qemu-riscv/qemu_util.c | 100 ---------------------- src/mainboard/emulation/spike-riscv/Makefile.inc | 3 - src/mainboard/emulation/spike-riscv/spike_util.c | 100 ---------------------- src/mainboard/emulation/spike-riscv/uart.c | 1 - src/mainboard/lowrisc/nexys4ddr/Makefile.inc | 3 - src/mainboard/lowrisc/nexys4ddr/uart.c | 1 - src/mainboard/lowrisc/nexys4ddr/util.c | 103 ----------------------- 13 files changed, 173 insertions(+), 386 deletions(-)
diff --git a/src/arch/riscv/Makefile.inc b/src/arch/riscv/Makefile.inc index cf6ce99..1fe8f7c 100644 --- a/src/arch/riscv/Makefile.inc +++ b/src/arch/riscv/Makefile.inc @@ -34,6 +34,7 @@ $(call src-to-obj,bootblock,$(dir)/id.S): $(obj)/build.h bootblock-y = bootblock.S stages.c bootblock-y += trap_util.S bootblock-y += trap_handler.c +bootblock-y += mcall.c bootblock-y += virtual_memory.c bootblock-y += boot.c bootblock-y += misc.c @@ -89,7 +90,6 @@ endif ifeq ($(CONFIG_ARCH_RAMSTAGE_RISCV),y)
ramstage-y = -ramstage-y += trap_handler.c ramstage-y += virtual_memory.c ramstage-y += stages.c ramstage-y += misc.c diff --git a/src/arch/riscv/include/mcall.h b/src/arch/riscv/include/mcall.h new file mode 100644 index 0000000..a43b9cf --- /dev/null +++ b/src/arch/riscv/include/mcall.h @@ -0,0 +1,70 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 The ChromiumOS Authors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _MCALL_H +#define _MCALL_H + +#include <arch/encoding.h> +#include <atomic.h> +#include <stdint.h> + +#define HLS_SIZE 64 +#define MENTRY_FRAME_SIZE HLS_SIZE + +typedef struct { + unsigned long base; + unsigned long size; + unsigned long node_id; +} memory_block_info; + +typedef struct { + unsigned long dev; + unsigned long cmd; + unsigned long data; + unsigned long sbi_private_data; +} sbi_device_message; + + +typedef struct { + sbi_device_message* device_request_queue_head; + unsigned long device_request_queue_size; + sbi_device_message* device_response_queue_head; + sbi_device_message* device_response_queue_tail; + + int hart_id; + int ipi_pending; +} hls_t; + +#define MACHINE_STACK_TOP() ({ \ + register uintptr_t sp asm ("sp"); \ + (void*)((sp + RISCV_PGSIZE) & -RISCV_PGSIZE); }) + +// hart-local storage, at top of stack +#define HLS() ((hls_t*)(MACHINE_STACK_TOP() - HLS_SIZE)) +#define OTHER_HLS(id) ((hls_t*)((void*)HLS() + RISCV_PGSIZE * ((id) - HLS()->hart_id))) + +#define MACHINE_STACK_SIZE RISCV_PGSIZE + +uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *p); +uintptr_t mcall_console_putchar(uint8_t ch); +uintptr_t mcall_dev_req(sbi_device_message *m); +uintptr_t mcall_dev_resp(void); +uintptr_t mcall_set_timer(unsigned long long when); +uintptr_t mcall_clear_ipi(void); +uintptr_t mcall_send_ipi(uintptr_t recipient); +uintptr_t mcall_shutdown(void); +void hls_init(uint32_t hart_id); // need to call this before launching linux + +#endif diff --git a/src/arch/riscv/include/spike_util.h b/src/arch/riscv/include/spike_util.h deleted file mode 100644 index 175ee6c..0000000 --- a/src/arch/riscv/include/spike_util.h +++ /dev/null @@ -1,70 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2013 The ChromiumOS Authors - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef _SPIKE_UTIL_H -#define _SPIKE_UTIL_H - -#include <arch/encoding.h> -#include <atomic.h> -#include <stdint.h> - -#define HLS_SIZE 64 -#define MENTRY_FRAME_SIZE HLS_SIZE - -typedef struct { - unsigned long base; - unsigned long size; - unsigned long node_id; -} memory_block_info; - -typedef struct { - unsigned long dev; - unsigned long cmd; - unsigned long data; - unsigned long sbi_private_data; -} sbi_device_message; - - -typedef struct { - sbi_device_message* device_request_queue_head; - unsigned long device_request_queue_size; - sbi_device_message* device_response_queue_head; - sbi_device_message* device_response_queue_tail; - - int hart_id; - int ipi_pending; -} hls_t; - -#define MACHINE_STACK_TOP() ({ \ - register uintptr_t sp asm ("sp"); \ - (void*)((sp + RISCV_PGSIZE) & -RISCV_PGSIZE); }) - -// hart-local storage, at top of stack -#define HLS() ((hls_t*)(MACHINE_STACK_TOP() - HLS_SIZE)) -#define OTHER_HLS(id) ((hls_t*)((void*)HLS() + RISCV_PGSIZE * ((id) - HLS()->hart_id))) - -#define MACHINE_STACK_SIZE RISCV_PGSIZE - -uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *p); -uintptr_t mcall_console_putchar(uint8_t ch); -uintptr_t mcall_dev_req(sbi_device_message *m); -uintptr_t mcall_dev_resp(void); -uintptr_t mcall_set_timer(unsigned long long when); -uintptr_t mcall_clear_ipi(void); -uintptr_t mcall_send_ipi(uintptr_t recipient); -uintptr_t mcall_shutdown(void); -void hls_init(uint32_t hart_id); // need to call this before launching linux - -#endif diff --git a/src/arch/riscv/mcall.c b/src/arch/riscv/mcall.c new file mode 100644 index 0000000..fdc02be --- /dev/null +++ b/src/arch/riscv/mcall.c @@ -0,0 +1,101 @@ +/* + * Copyright (c) 2013, The Regents of the University of California (Regents). + * All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Regents nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, + * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING + * OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS + * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED + * HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE + * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#include <arch/barrier.h> +#include <arch/errno.h> +#include <atomic.h> +#include <console/console.h> +#include <mcall.h> +#include <string.h> +#include <vm.h> + +uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *info) +{ + if (id == 0) { + mprv_write_ulong(&info->base, 2U*GiB); + + /* TODO: Return the correct value */ + mprv_write_ulong(&info->size, 1*GiB); + return 0; + } + + return -1; +} + +uintptr_t mcall_send_ipi(uintptr_t recipient) +{ + die("mcall_send_ipi is currently not implemented"); + return 0; +} + +uintptr_t mcall_clear_ipi(void) +{ + // only clear SSIP if no other events are pending + if (HLS()->device_response_queue_head == NULL) { + clear_csr(mip, MIP_SSIP); + /* Ensure the other hart sees it. */ + mb(); + } + + return atomic_swap(&HLS()->ipi_pending, 0); +} + +uintptr_t mcall_shutdown(void) +{ + die("mcall_shutdown is currently not implemented"); + return 0; +} + +uintptr_t mcall_set_timer(unsigned long long when) +{ + printk(BIOS_DEBUG, "mcall_set_timer is currently not implemented, ignoring\n"); + return 0; +} + +uintptr_t mcall_dev_req(sbi_device_message *m) +{ + die("mcall_dev_req is currently not implemented"); + return 0; +} + +uintptr_t mcall_dev_resp(void) +{ + die("mcall_dev_resp is currently not implemented"); + return 0; +} + +void hls_init(uint32_t hart_id) +{ + memset(HLS(), 0, sizeof(*HLS())); + HLS()->hart_id = hart_id; +} + +uintptr_t mcall_console_putchar(uint8_t ch) +{ + do_putchar(ch); + return 0; +} diff --git a/src/arch/riscv/trap_handler.c b/src/arch/riscv/trap_handler.c index ad49928..8a7b513 100644 --- a/src/arch/riscv/trap_handler.c +++ b/src/arch/riscv/trap_handler.c @@ -17,7 +17,7 @@ #include <arch/exception.h> #include <arch/sbi.h> #include <console/console.h> -#include <spike_util.h> +#include <mcall.h> #include <string.h> #include <vm.h>
diff --git a/src/mainboard/emulation/qemu-riscv/Makefile.inc b/src/mainboard/emulation/qemu-riscv/Makefile.inc index 4fbe401..36f1fca 100644 --- a/src/mainboard/emulation/qemu-riscv/Makefile.inc +++ b/src/mainboard/emulation/qemu-riscv/Makefile.inc @@ -13,14 +13,11 @@ ## GNU General Public License for more details.
bootblock-y += uart.c -bootblock-y += qemu_util.c bootblock-y += rom_media.c romstage-y += romstage.c -romstage-y += qemu_util.c romstage-y += uart.c romstage-y += rom_media.c ramstage-y += uart.c -ramstage-y += qemu_util.c ramstage-y += rom_media.c
bootblock-y += memlayout.ld diff --git a/src/mainboard/emulation/qemu-riscv/qemu_util.c b/src/mainboard/emulation/qemu-riscv/qemu_util.c deleted file mode 100644 index c97a61f..0000000 --- a/src/mainboard/emulation/qemu-riscv/qemu_util.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * Copyright (c) 2013, The Regents of the University of California (Regents). - * All Rights Reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the Regents nor the - * names of its contributors may be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, - * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING - * OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS - * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED - * HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE - * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. - */ - -#include <arch/barrier.h> -#include <arch/errno.h> -#include <atomic.h> -#include <console/console.h> -#include <spike_util.h> -#include <string.h> -#include <vm.h> - -uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *info) -{ - if (id == 0) { - mprv_write_ulong(&info->base, 2U*GiB); - - /* TODO: Return the correct value */ - mprv_write_ulong(&info->size, 1*GiB); - return 0; - } - - return -1; -} - -uintptr_t mcall_send_ipi(uintptr_t recipient) -{ - die("mcall_send_ipi is currently not implemented"); - return 0; -} - -uintptr_t mcall_clear_ipi(void) -{ - // only clear SSIP if no other events are pending - if (HLS()->device_response_queue_head == NULL) { - clear_csr(mip, MIP_SSIP); - mb(); - } - - return atomic_swap(&HLS()->ipi_pending, 0); -} - -uintptr_t mcall_shutdown(void) -{ - die("mcall_shutdown is currently not implemented"); - return 0; -} - -uintptr_t mcall_set_timer(unsigned long long when) -{ - printk(BIOS_DEBUG, "mcall_set_timer is currently not implemented, ignoring\n"); - return 0; -} - -uintptr_t mcall_dev_req(sbi_device_message *m) -{ - die("mcall_dev_req is currently not implemented"); - return 0; -} - -uintptr_t mcall_dev_resp(void) -{ - die("mcall_dev_resp is currently not implemented"); - return 0; -} - -void hls_init(uint32_t hart_id) -{ - memset(HLS(), 0, sizeof(*HLS())); - HLS()->hart_id = hart_id; -} - -uintptr_t mcall_console_putchar(uint8_t ch) -{ - do_putchar(ch); - return 0; -} diff --git a/src/mainboard/emulation/spike-riscv/Makefile.inc b/src/mainboard/emulation/spike-riscv/Makefile.inc index e3c9481..36f1fca 100644 --- a/src/mainboard/emulation/spike-riscv/Makefile.inc +++ b/src/mainboard/emulation/spike-riscv/Makefile.inc @@ -13,14 +13,11 @@ ## GNU General Public License for more details.
bootblock-y += uart.c -bootblock-y += spike_util.c bootblock-y += rom_media.c romstage-y += romstage.c romstage-y += uart.c -romstage-y += spike_util.c romstage-y += rom_media.c ramstage-y += uart.c -ramstage-y += spike_util.c ramstage-y += rom_media.c
bootblock-y += memlayout.ld diff --git a/src/mainboard/emulation/spike-riscv/spike_util.c b/src/mainboard/emulation/spike-riscv/spike_util.c deleted file mode 100644 index c97a61f..0000000 --- a/src/mainboard/emulation/spike-riscv/spike_util.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * Copyright (c) 2013, The Regents of the University of California (Regents). - * All Rights Reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the Regents nor the - * names of its contributors may be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, - * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING - * OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS - * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED - * HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE - * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. - */ - -#include <arch/barrier.h> -#include <arch/errno.h> -#include <atomic.h> -#include <console/console.h> -#include <spike_util.h> -#include <string.h> -#include <vm.h> - -uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *info) -{ - if (id == 0) { - mprv_write_ulong(&info->base, 2U*GiB); - - /* TODO: Return the correct value */ - mprv_write_ulong(&info->size, 1*GiB); - return 0; - } - - return -1; -} - -uintptr_t mcall_send_ipi(uintptr_t recipient) -{ - die("mcall_send_ipi is currently not implemented"); - return 0; -} - -uintptr_t mcall_clear_ipi(void) -{ - // only clear SSIP if no other events are pending - if (HLS()->device_response_queue_head == NULL) { - clear_csr(mip, MIP_SSIP); - mb(); - } - - return atomic_swap(&HLS()->ipi_pending, 0); -} - -uintptr_t mcall_shutdown(void) -{ - die("mcall_shutdown is currently not implemented"); - return 0; -} - -uintptr_t mcall_set_timer(unsigned long long when) -{ - printk(BIOS_DEBUG, "mcall_set_timer is currently not implemented, ignoring\n"); - return 0; -} - -uintptr_t mcall_dev_req(sbi_device_message *m) -{ - die("mcall_dev_req is currently not implemented"); - return 0; -} - -uintptr_t mcall_dev_resp(void) -{ - die("mcall_dev_resp is currently not implemented"); - return 0; -} - -void hls_init(uint32_t hart_id) -{ - memset(HLS(), 0, sizeof(*HLS())); - HLS()->hart_id = hart_id; -} - -uintptr_t mcall_console_putchar(uint8_t ch) -{ - do_putchar(ch); - return 0; -} diff --git a/src/mainboard/emulation/spike-riscv/uart.c b/src/mainboard/emulation/spike-riscv/uart.c index 8513849..57647fe 100644 --- a/src/mainboard/emulation/spike-riscv/uart.c +++ b/src/mainboard/emulation/spike-riscv/uart.c @@ -17,7 +17,6 @@ #include <console/uart.h> #include <arch/io.h> #include <boot/coreboot_tables.h> -#include <spike_util.h>
uintptr_t uart_platform_base(int idx) { diff --git a/src/mainboard/lowrisc/nexys4ddr/Makefile.inc b/src/mainboard/lowrisc/nexys4ddr/Makefile.inc index 69519b1..abd341c 100644 --- a/src/mainboard/lowrisc/nexys4ddr/Makefile.inc +++ b/src/mainboard/lowrisc/nexys4ddr/Makefile.inc @@ -13,14 +13,11 @@ ## GNU General Public License for more details.
bootblock-y += uart.c -bootblock-y += util.c bootblock-y += rom_media.c romstage-y += romstage.c romstage-y += uart.c -romstage-y += util.c romstage-y += rom_media.c ramstage-y += uart.c -ramstage-y += util.c ramstage-y += rom_media.c
bootblock-y += memlayout.ld diff --git a/src/mainboard/lowrisc/nexys4ddr/uart.c b/src/mainboard/lowrisc/nexys4ddr/uart.c index d19ce52..7758db3 100644 --- a/src/mainboard/lowrisc/nexys4ddr/uart.c +++ b/src/mainboard/lowrisc/nexys4ddr/uart.c @@ -17,7 +17,6 @@ #include <console/uart.h> #include <arch/io.h> #include <boot/coreboot_tables.h> -#include <spike_util.h>
uintptr_t uart_platform_base(int idx) { diff --git a/src/mainboard/lowrisc/nexys4ddr/util.c b/src/mainboard/lowrisc/nexys4ddr/util.c deleted file mode 100644 index 32cdb6d..0000000 --- a/src/mainboard/lowrisc/nexys4ddr/util.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - * Copyright (c) 2013, The Regents of the University of California (Regents). - * All Rights Reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the Regents nor the - * names of its contributors may be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, - * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING - * LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS - * DOCUMENTATION, EVEN IF REGENTS HAS BEEN ADVISED OF THE POSSIBILITY - * OF SUCH DAMAGE. - * - * REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING - * DOCUMENTATION, IF ANY, PROVIDED HEREUNDER IS PROVIDED "AS - * IS". REGENTS HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, - * UPDATES, ENHANCEMENTS, OR MODIFICATIONS. - */ - -#include <arch/barrier.h> -#include <arch/errno.h> -#include <atomic.h> -#include <console/console.h> -#include <spike_util.h> -#include <string.h> -#include <vm.h> - -uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *info) -{ - if (id == 0) { - mprv_write_ulong(&info->base, 2U*GiB); - - /* TODO: Return the correct value */ - mprv_write_ulong(&info->size, 1*GiB); - return 0; - } - - return -1; -} - -uintptr_t mcall_send_ipi(uintptr_t recipient) -{ - die("mcall_send_ipi is currently not implemented"); - return 0; -} - -uintptr_t mcall_clear_ipi(void) -{ - // only clear SSIP if no other events are pending - if (HLS()->device_response_queue_head == NULL) { - clear_csr(mip, MIP_SSIP); - /* Ensure the other hart sees it. */ - mb(); - } - - return atomic_swap(&HLS()->ipi_pending, 0); -} - -uintptr_t mcall_shutdown(void) -{ - die("mcall_shutdown is currently not implemented"); - return 0; -} - -uintptr_t mcall_set_timer(unsigned long long when) -{ - printk(BIOS_DEBUG, "mcall_set_timer is currently not implemented, ignoring\n"); - return 0; -} - -uintptr_t mcall_dev_req(sbi_device_message *m) -{ - die("mcall_dev_req is currently not implemented"); - return 0; -} - -uintptr_t mcall_dev_resp(void) -{ - die("mcall_dev_resp is currently not implemented"); - return 0; -} - -void hls_init(uint32_t hart_id) -{ - memset(HLS(), 0, sizeof(*HLS())); - HLS()->hart_id = hart_id; -} - -uintptr_t mcall_console_putchar(uint8_t ch) -{ - do_putchar(ch); - return 0; -}
-
Jonathan Neuschäfer