From patchwork Sun Apr 28 08:51:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 13645943 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C5ADDC4345F for ; Sun, 28 Apr 2024 09:09:46 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s10WG-000445-1Y; Sun, 28 Apr 2024 05:08:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s10W9-0003Zh-Aj for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:08:17 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s10W6-0004Eo-Kk for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:08:16 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8Cxyen7ES5m21kEAA--.3530S3; Sun, 28 Apr 2024 17:08:11 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8CxpFb1ES5mmCgIAA--.5818S6; Sun, 28 Apr 2024 17:08:11 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, Bibo Mao Subject: [PULL 04/17] hw/loongarch: Add init_cmdline Date: Sun, 28 Apr 2024 16:51:04 +0800 Message-Id: <20240428085117.2422473-5-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20240428085117.2422473-1-gaosong@loongson.cn> References: <20240428085117.2422473-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8CxpFb1ES5mmCgIAA--.5818S6 X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add init_cmline and set boot_info->a0, a1 Signed-off-by: Song Gao Reviewed-by: Bibo Mao Message-Id: <20240426091551.2397867-5-gaosong@loongson.cn> --- hw/loongarch/boot.c | 30 ++++++++++++++++++++++++++++++ include/hw/loongarch/virt.h | 2 ++ target/loongarch/cpu.h | 2 ++ 3 files changed, 34 insertions(+) diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c index d1a8434127..aca5ad388e 100644 --- a/hw/loongarch/boot.c +++ b/hw/loongarch/boot.c @@ -63,6 +63,16 @@ static const unsigned int slave_boot_code[] = { 0x4c000020, /* jirl $zero, $ra,0 */ }; +static void init_cmdline(struct loongarch_boot_info *info, void *p, void *start) +{ + hwaddr cmdline_addr = (hwaddr)p - (hwaddr)start; + + info->a0 = 1; + info->a1 = cmdline_addr; + + memcpy(p, info->kernel_cmdline, COMMAND_LINE_SIZE); +} + static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr) { return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS); @@ -122,6 +132,10 @@ static void reset_load_elf(void *opaque) cpu_reset(CPU(cpu)); if (env->load_elf) { + if (cpu == LOONGARCH_CPU(first_cpu)) { + env->gpr[4] = env->boot_info->a0; + env->gpr[5] = env->boot_info->a1; + } cpu_set_pc(CPU(cpu), env->elf_address); } } @@ -159,8 +173,17 @@ static void loongarch_firmware_boot(LoongArchMachineState *lams, fw_cfg_add_kernel_info(info, lams->fw_cfg); } +static void init_boot_rom(struct loongarch_boot_info *info, void *p) +{ + void *start = p; + + init_cmdline(info, p, start); + p += COMMAND_LINE_SIZE; +} + static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info) { + void *p, *bp; int64_t kernel_addr = 0; LoongArchCPU *lacpu; CPUState *cs; @@ -174,6 +197,12 @@ static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info) } } + /* Load cmdline and system tables at [0 - 1 MiB] */ + p = g_malloc0(1 * MiB); + bp = p; + init_boot_rom(info, p); + rom_add_blob_fixed_as("boot_info", bp, 1 * MiB, 0, &address_space_memory); + /* Load slave boot code at pflash0 . */ void *boot_code = g_malloc0(VIRT_FLASH0_SIZE); memcpy(boot_code, &slave_boot_code, sizeof(slave_boot_code)); @@ -191,6 +220,7 @@ static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info) } g_free(boot_code); + g_free(bp); } void loongarch_load_kernel(MachineState *ms, struct loongarch_boot_info *info) diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index cf2f2bfb19..d7a074d69f 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -33,6 +33,8 @@ #define VIRT_GED_MEM_ADDR (VIRT_GED_EVT_ADDR + ACPI_GED_EVT_SEL_LEN) #define VIRT_GED_REG_ADDR (VIRT_GED_MEM_ADDR + MEMORY_HOTPLUG_IO_LEN) +#define COMMAND_LINE_SIZE 512 + struct LoongArchMachineState { /*< private >*/ MachineState parent_obj; diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index abb01b2cc7..c5722670f5 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -359,6 +359,8 @@ typedef struct CPUArchState { uint32_t mp_state; /* Store ipistate to access from this struct */ DeviceState *ipistate; + + struct loongarch_boot_info *boot_info; #endif } CPULoongArchState;