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([195.234.76.149]) by smtp.gmail.com with ESMTPSA id f14-20020a0565123b0e00b004b7033da2d7sm150221lfv.128.2023.01.06.05.14.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Jan 2023 05:14:42 -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: 154670af-8dc4-11ed-91b6-6bf2151ebd3b DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; 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=WNxlUh9Ka9jPjJlnMEMMefixCKNIhgCiXW1ZWCXQV/k=; b=Cmp2WrBPADxtPoiKL4ZCWZjbwolz9CwJgGbJPD1rMDDiI4pZKxyKs8tIFpSVx7xZph Zcr/Wt6lvg3FkgxLGPbYrF4RjLh+MGPOl10al8e9P5VIfsaWmG7qfqwCr0gDRlmbkAfz CO6Ru90aBDKMmqCyBvUnfKTZ59ad/qLzNaERvfFpq6tS0plPuFGbhtSTcZgJkNcphG7/ lPwDSreK1qoe1UVY5EEgEN8gA9fHaUCF8UDtd1r6OC2Dyo1tcmf6wdE+qUhpO9dKCZ/u AR6XI3Uh00paOLb9LVgKW81uqYPOwtEkeq9LK9r8uTmgKaMjbvQUwNO/eMCW375itLxT /Wmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=WNxlUh9Ka9jPjJlnMEMMefixCKNIhgCiXW1ZWCXQV/k=; b=ujdg131bgkDNS3qAHK/yHdeARCfT6Gj+cHjplIlO4XNknz8yGVkhbyBx3HluqPEz1T /RJmQCwgxUVUDUZnYNwX0JW53//D1T/2E7QDUyDdU58ktV3XSrokah9aVxM19fxiq1rB uWCXBLK19ZmHoAs8V0zaxMfgpucQnkR6zBTgTFTt3XTh87d5cHnMrN1pYyuoQd5Okaap U4aQGT14qXm8yayUpL2kYv/b8LLT79qT7uYKfSOHwntgqzoR+OQr2j2CHN/ikZIHnDCy 6b/HMN+P2Tev0od2jf60jAGIS8aIe7uQvBiQmNgU+PXK4YkvcY6lAxoWlQ/FendQiOh1 B8Qw== X-Gm-Message-State: AFqh2kpRjTK+rKIz6o+3fwT73Gd5hIN9KMZWW2jQhsyZHkEQepBrLSj4 fu73Q2D9zyY9feCAmQ5OiKWGp5c9exjV3cpW X-Google-Smtp-Source: AMrXdXvor3i3sFq+rVboLeo1F3I7ZDy57MwxwjjT77+SwrslgXm0lEQNqBGQktwp9LJBw0V3e91aUw== X-Received: by 2002:ac2:4f13:0:b0:4b5:5da1:4bcb with SMTP id k19-20020ac24f13000000b004b55da14bcbmr20144859lfr.13.1673010882425; Fri, 06 Jan 2023 05:14:42 -0800 (PST) From: Oleksii Kurochko To: xen-devel@lists.xenproject.org Cc: Andrew Cooper , Stefano Stabellini , Gianluca Guida , Oleksii Kurochko , Bob Eshleman , Alistair Francis , Connor Davis Subject: [PATCH v1 3/8] xen/riscv: introduce stack stuff Date: Fri, 6 Jan 2023 15:14:24 +0200 Message-Id: X-Mailer: git-send-email 2.38.1 In-Reply-To: References: MIME-Version: 1.0 The patch introduces and sets up a stack in order to go to C environment Signed-off-by: Oleksii Kurochko --- xen/arch/riscv/Makefile | 1 + xen/arch/riscv/riscv64/head.S | 8 +++++++- xen/arch/riscv/setup.c | 6 ++++++ 3 files changed, 14 insertions(+), 1 deletion(-) create mode 100644 xen/arch/riscv/setup.c diff --git a/xen/arch/riscv/Makefile b/xen/arch/riscv/Makefile index 248f2cbb3e..5a67a3f493 100644 --- a/xen/arch/riscv/Makefile +++ b/xen/arch/riscv/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_RISCV_64) += riscv64/ +obj-y += setup.o $(TARGET): $(TARGET)-syms $(OBJCOPY) -O binary -S $< $@ diff --git a/xen/arch/riscv/riscv64/head.S b/xen/arch/riscv/riscv64/head.S index 990edb70a0..ddc7104701 100644 --- a/xen/arch/riscv/riscv64/head.S +++ b/xen/arch/riscv/riscv64/head.S @@ -1,4 +1,10 @@ .section .text.header, "ax", %progbits ENTRY(start) - j start + la sp, cpu0_boot_stack + li t0, PAGE_SIZE + add sp, sp, t0 + +_start_hang: + wfi + j _start_hang diff --git a/xen/arch/riscv/setup.c b/xen/arch/riscv/setup.c new file mode 100644 index 0000000000..2c7dca1daa --- /dev/null +++ b/xen/arch/riscv/setup.c @@ -0,0 +1,6 @@ +#include +#include + +/* Xen stack for bringing up the first CPU. */ +unsigned char __initdata cpu0_boot_stack[PAGE_SIZE] + __aligned(PAGE_SIZE);