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[46.204.108.203]) by smtp.gmail.com with ESMTPSA id s8-20020a05651c048800b00290679ebac1sm2109551ljc.9.2023.03.02.05.23.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Mar 2023 05:23:25 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 6a480313-b8fd-11ed-a550-8520e6686977 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1677763406; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=qrA0iYFCR4ncdpexRkMJ+7MgkO9AgTh8mz6kQeU8h+o=; b=AjsUzrH84OxVO8RIOWzgeLAumthUbfkJTRGXH9QgOM04DUyXL8Bu/z0aM2yYZ5ARDd nuJ29lbO39yywp/bKKMsG72zud/brTiOP/jZODaw7zo5+nghlqWKvyxHFowACD3zwMp4 tmIgQFVrgBmypuafzS1Mgtz3FaQbN9ElRqB1tOAn6SUHuazbvwiBuHeHme0aVSZzdJPn 40vbTVDS2f0/5G6RD6/fEdF9Rf0A5n2uac2WFpwvjArWRyLF3emy9usYkdVtACUaWCZW c5aYzmPNmEUBSyQGaZw2uTp0Yyn3K+Gihg5jtB0ch7snHDMBT0eSKgkV7m8FY4iTx1Yk SGxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1677763406; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=qrA0iYFCR4ncdpexRkMJ+7MgkO9AgTh8mz6kQeU8h+o=; b=71g7sYaei5SkeBK8blC7yDz3Tfk8OCDAYqPqPwF3babGKax3f5pAJPBSrHTxrbZoHy dm7Rd4917/TTMKeD9LWaLzMbwrXQGWj7zwGf95F8/PjJsiFnj3DiS3QOxwVmL1xjhDBO cwmeHduaDJcYPdbH1/xchHhvwTA4Co7wsuejHWCw1obdXMVPkQnAKP++KZuqpma/y8B7 h8EdY+3UR0JE/ww5cZPTHdEe3nmit2Hlpvqvi5X/7wGVUpjY4GQWQx5sLPJ82CwH/J/d kAIfAot+iA3Ni+u8eGNNbOdKJ8RYXyvjmDAambX/1dpzOfgvG4aew7LEZ4MDytlHwIZr n0Dg== X-Gm-Message-State: AO0yUKWJKvnGQ9lfkBUf6RGLlYFf111eB+uqQDyTY1sKA84TGpFBzsVL hoF8xzKzE+aOnO5Uo8/tzBXUVB2U2UY= X-Google-Smtp-Source: AK7set+8wFX5A2EYqKw+8A7DbB1spXHihKRDg6dn1++XEl/b6f6lpLTLXFNYNt1l5kSZCqjsJBtxvQ== X-Received: by 2002:a2e:b0d3:0:b0:295:b2f0:a858 with SMTP id g19-20020a2eb0d3000000b00295b2f0a858mr2852131ljl.10.1677763406277; Thu, 02 Mar 2023 05:23:26 -0800 (PST) From: Oleksii Kurochko To: xen-devel@lists.xenproject.org Cc: Jan Beulich , Andrew Cooper , Stefano Stabellini , Gianluca Guida , Oleksii Kurochko , Bob Eshleman , Alistair Francis , Connor Davis Subject: [PATCH v2 1/3] xen/riscv: read/save hart_id and dtb_base passed by bootloader Date: Thu, 2 Mar 2023 15:23:18 +0200 Message-Id: <3edbb40e86e480b2b71d596ff61c05336004b14c.1677762812.git.oleksii.kurochko@gmail.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Signed-off-by: Oleksii Kurochko --- Changes since v1: * read/save/pass of hart_id and dtb_base passed by a bootloader were moved to head.S. * Update start_xen() to recieve hard_id & dtb_base --- xen/arch/riscv/riscv64/head.S | 24 ++++++++++++++++++++++++ xen/arch/riscv/setup.c | 3 ++- 2 files changed, 26 insertions(+), 1 deletion(-) diff --git a/xen/arch/riscv/riscv64/head.S b/xen/arch/riscv/riscv64/head.S index ffd95f9f89..851b4691a5 100644 --- a/xen/arch/riscv/riscv64/head.S +++ b/xen/arch/riscv/riscv64/head.S @@ -1,3 +1,4 @@ +#include #include .section .text.header, "ax", %progbits @@ -6,8 +7,31 @@ ENTRY(start) /* Mask all interrupts */ csrw CSR_SIE, zero + /* Save HART ID and DTB base */ + lla a6, _bootcpu_id + REG_S a0, (a6) + lla a6, _dtb_base + REG_S a1, (a6) + la sp, cpu0_boot_stack li t0, STACK_SIZE add sp, sp, t0 + lla a6, _bootcpu_id + REG_L a0, (a6) + lla a6, _dtb_base + REG_L a1, (a6) + tail start_xen + + /* + * Boot cpu id is passed by a bootloader + */ +_bootcpu_id: + RISCV_PTR 0x0 + + /* + * DTB base is passed by a bootloader + */ +_dtb_base: + RISCV_PTR 0x0 diff --git a/xen/arch/riscv/setup.c b/xen/arch/riscv/setup.c index 1c87899e8e..d9723fe1c0 100644 --- a/xen/arch/riscv/setup.c +++ b/xen/arch/riscv/setup.c @@ -7,7 +7,8 @@ unsigned char __initdata cpu0_boot_stack[STACK_SIZE] __aligned(STACK_SIZE); -void __init noreturn start_xen(void) +void __init noreturn start_xen(unsigned long bootcpu_id, + unsigned long dtb_base) { early_printk("Hello from C env\n"); -- 2.39.0