From patchwork Tue Mar 24 04:16:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Patra X-Patchwork-Id: 244190 List-Id: U-Boot discussion From: atish.patra at wdc.com (Atish Patra) Date: Mon, 23 Mar 2020 21:16:44 -0700 Subject: [PATCH v4 0/6] DT related fixes for RISC-V UEFI Message-ID: <20200324041650.280302-1-atish.patra@wdc.com> This series adds few DT related fixes required for Linux EFI stub to work on RISC-V. Patch 1 adds the boot hartid property under /chosen node. The related discussion can be found here. https://patchwork.ozlabs.org/patch/1233664/ https://lists.denx.de/pipermail/u-boot/2020-March/402085.html Patch 2 fixes a generic issue in fdtdec related to reserved memory node. Patch 3,4,5 provide one of the option to update reserved-memory node for next stage. It depends on Bin's following series in OpenSBI http://lists.infradead.org/pipermail/opensbi/2020-March/001316.html The other options are SBI extension and trap/emulate on PMP csr access. The detaild discussion can be found here. https://github.com/riscv/riscv-sbi-doc/pull/37 Patch 1 & 2 can be applied independently from 3 and 4. I want to keep all the patches together to provide a holistic view of changes required for RISC-V UEFI. Changes v3->v4: 1. Dropped generic efi fix patch as it is already merged. 2. Moved all the fdt fixups to a common file. 3. Addressed few nit comments. Changes from v2->v3: 1. Update the DT meant for OS if it is different from the one used by U-Boot 2. Use different FDT api to obtain "reg" address & size to honor the cell count. Changes from v1->v2: 1. Fix the issue if chosen node is not present. Changes from previous version: 1. Renamed the DT node property to "boot-hartid" from "efi-boot-hartid". 2. Changed the property type to u32 instead of u64 for RV32 compatibility. Atish Patra (6): riscv: Add boot hartid to Device tree fdtdec: Fix boundary check riscv: Provide a mechanism to fix DT for reserved memory riscv: Setup reserved-memory node for FU540 riscv: Copy the reserved-memory nodes to final DT riscv: Move all fdt fixups together arch/riscv/cpu/start.S | 1 + arch/riscv/include/asm/global_data.h | 1 + arch/riscv/include/asm/u-boot-riscv.h | 2 + arch/riscv/lib/Makefile | 1 + arch/riscv/lib/asm-offsets.c | 1 + arch/riscv/lib/bootm.c | 5 - arch/riscv/lib/fdt_fixup.c | 128 ++++++++++++++++++++++++++ configs/sifive_fu540_defconfig | 1 + lib/fdtdec.c | 3 +- 9 files changed, 137 insertions(+), 6 deletions(-) create mode 100644 arch/riscv/lib/fdt_fixup.c --- 2.25.1