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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-60c2f485e1dsm1025338a12.62.2025.06.24.06.27.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Jun 2025 06:27:32 -0700 (PDT) Message-ID: <0826de9f-0125-44d9-84cd-1c52ba199a4a@oss.qualcomm.com> Date: Tue, 24 Jun 2025 15:27:31 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: qcom: ipq5424: Add reserved memory for TF-A To: Kathiravan Thirumoorthy , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Vignesh Viswanathan References: <20250624-atf-reserved-mem-v1-1-43b1940e2853@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20250624-atf-reserved-mem-v1-1-43b1940e2853@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=QINoRhLL c=1 sm=1 tr=0 ts=685aa7c6 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=6IFa9wvqVegA:10 a=COk6AnOGAAAA:8 a=EUspDBNiAAAA:8 a=pHj3i8gGA7zaLbmuchoA:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-ORIG-GUID: YiZolfSDKpnyltxa9ILTAJX3nWRbbOaz X-Proofpoint-GUID: YiZolfSDKpnyltxa9ILTAJX3nWRbbOaz X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjI0MDExMyBTYWx0ZWRfXzMIWRmbdBPGO jNIvz5qlHdrFW/FEUjvBhWW5mQkyaZ7uWQaM8tXT8y2pVRV2weiPVN3VMv2g7nEQ7N5bhpEaV1+ ASmB6r34XZqFrGZ/ONsBqLAaD3bWmdYJV3xIzC/XBP8rdbK3/m4fcImlkQ3ahigp6lEAn/7CO+8 vlLY65s+YLqwxtGuq/w9nSa46YvtJswWLFq8kEm1ui25vMgigJSy8r85jwzHcoQHDLqYQSde3XN ka6upFGy1L9aI77EFd/VoHJw01kWHAichcKUtLHp2uSO9tingC1ZhStko8292VMbd3FYFjF9JyD USw7eg6TmNteHhigGRqI1OJhTud8anJ5tOjpaahley7Gs1Z6rWkQgQbq0hexS72h+ujneovYb6d npPeZWCLseQ2HhzLcEeU9dfvF/MivNdWpgVM4UKCNJziqTNQvIKus1OItHJU+mtv4XecnzgO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-06-24_05,2025-06-23_07,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 malwarescore=0 adultscore=0 mlxscore=0 clxscore=1015 mlxlogscore=534 bulkscore=0 suspectscore=0 phishscore=0 impostorscore=0 lowpriorityscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2506240113 On 6/24/25 12:36 PM, Kathiravan Thirumoorthy wrote: > From: Vignesh Viswanathan > > IPQ5424 supports both TZ and TF-A as secure software options and various > DDR sizes. In most cases, TF-A or TZ is loaded at the same memory > location, but in the 256MB DDR configuration TF-A is loaded at a different > region. > > So, add the reserved memory node for TF-A and keep it disabled by default. > During bootup, U-Boot will detect which secure software is running and > enable or disable the node accordingly. > > Signed-off-by: Vignesh Viswanathan > Signed-off-by: Kathiravan Thirumoorthy > --- Can the said u-boot simply dynamically add the reservation then? Konrad