linux-kernel - [PATCH] drm/amdgpu: add support of bios dump in devcoredump

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Message-Id: <20240326143750.2292945-1-sunil.khatri@amd.com>
Date: Tue, 26 Mar 2024 20:07:50 +0530
From: Sunil Khatri <sunil.khatri@....com>
To: Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        Shashank Sharma <shashank.sharma@....com>
Cc: amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Hawking Zhang <Hawking.Zhang@....com>,
        Felix Kuehling <Felix.Kuehling@....com>,
        Lijo Lazar <lijo.lazar@....com>, Sunil Khatri <sunil.khatri@....com>
Subject: [PATCH] drm/amdgpu: add support of bios dump in devcoredump

dump the bios binary in the devcoredump.

Signed-off-by: Sunil Khatri <sunil.khatri@....com>
---
 .../gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c  | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
index 44c5da8aa9ce..f33963d777eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dev_coredump.c
@@ -132,6 +132,26 @@ amdgpu_devcoredump_read(char *buffer, loff_t offset, size_t count,
 	drm_printf(&p, "Faulty page starting at address: 0x%016llx\n", fault_info->addr);
 	drm_printf(&p, "Protection fault status register: 0x%x\n\n", fault_info->status);
 
+	/* Dump BIOS */
+	if (coredump->adev->bios && coredump->adev->bios_size) {
+		int i = 0;
+
+		drm_printf(&p, "BIOS Binary dump\n");
+		drm_printf(&p, "Valid BIOS  Size:%d bytes type:%s\n",
+			   coredump->adev->bios_size,
+			   coredump->adev->is_atom_fw ?
+			   "Atom bios":"Non Atom Bios");
+
+		while (i < coredump->adev->bios_size) {
+			/* Printing 15 bytes in a line */
+			if (i % 15 == 0)
+				drm_printf(&p, "\n");
+			drm_printf(&p, "0x%x \t", coredump->adev->bios[i]);
+			i++;
+		}
+		drm_printf(&p, "\n");
+	}
+
 	/* Add ring buffer information */
 	drm_printf(&p, "Ring buffer information\n");
 	for (int i = 0; i < coredump->adev->num_rings; i++) {
-- 
2.34.1