opensbi.git/platform, branch v0.7

platform: thead/c910: Use HSM extension to boot secondary cores

2020-03-28T08:11:03Z

Remove custom vendor extension and use HSM extension to boot secondary cores Signed-off-by: Liu Yibin Reviewed-by: Anup Patel Reviewed-by: Bin Meng

platform: openpiton: Read the device configurations from device tree

2020-03-24T08:03:39Z

OpenPiton is designed to run on different FPGAs with different configurations. Use the fdt parser to retrieve the required values from device tree instead of using fixed values. Signed-off-by: Atish Patra Tested-by: Jonathan Balkind Reviewed-by: Anup Patel

lib: utils: Move fdt fixup helper routines to a different file

2020-03-24T08:00:32Z

FDT helper file contain both fdt fixup and parsing functions. Split the fixup related functions to a separate file for a better code organization. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

platform: Add OpenPiton platform support

2020-03-24T07:48:38Z

OpenPiton is a research platform from Princeton University [1]. "OpenPiton is the world's first open source, general purpose, multithreaded manycore processor. It is a tiled manycore framework scalable from one to 1/2 billion cores." Add OpenSBI support for OpenPiton. As it is based on ariane core, it reuses the platform code from arine project. [1]. https://github.com/PrincetonUniversity/openpiton Signed-off-by: Atish Patra Reviewed-by: Anup Patel

platform: fpga/ariane: Remove redundant plic address macros

2020-03-24T07:45:52Z

All the common PLIC specific macros are already defined in plic.c. Remove it from platform code. While at it, Fix the other coding style issues. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

platform: Move ariane standalone fpga project to its own project

2020-03-24T07:42:17Z

Signed-off-by: Atish Patra Reviewed-by: Anup Patel

platform: sifive/fu540: Remove FU540_ENABLED_HART_MASK option

2020-03-19T04:02:45Z

The FU540_ENABLED_HART_MASK compile time option was added for initial bring-up on SiFive Unleashed. This option is redundant now because disabled_hart_mask is already removed. Based on this rationale, we remove FU540_ENABLED_HART_MASK compile time option. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Atish Patra

include: sbi_platform: Introduce HART index to HART id table

2020-03-19T04:00:01Z

A platform can have discontinuous and/or sparse HART ids so we cannot always assume a set of HARTs with continuous HART ids. This patch adds support for discontinuous and sparse HART ids by introducing HART index to HART id table. This table has platform hart_count entries and it maps HART index to HART id. The HART index to HART id table has only two restrictions: 1. HART index < sbi_platform hart_count 2. HART id < SBI_HARTMASK_MAX_BITS Example1: Let's say we have a platform with 2 HART ids 11 and 22, for such a a platform: hart_count = 2 hart_index2id[0] = 11 hart_index2id[1] = 22 Example2: Let's say we have a platform with 5 HARTs ids 0, 1, 2, 3, and 4 but out of these HART with id 0 is not usable so for such a platform: hart_count = 5 hart_index2id[0] = -1U hart_index2id[1] = 1 hart_index2id[2] = 2 hart_index2id[3] = 3 hart_index2id[4] = 4 OR hart_count = 4 hart_index2id[0] = 1 hart_index2id[1] = 2 hart_index2id[2] = 3 hart_index2id[3] = 4 With HART index to HART id table in place, the hart_disabled() callback is now redundant so we remove it as well. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Atish Patra

platform: Update to call general DT fix-up helper

2020-03-18T05:39:31Z

Platform andes/ae350, ariane-fpga, qemu/virt and sifive/fu540 codes have been updated to call this general DT fix-up helper. Signed-off-by: Bin Meng Reviewed-by: Anup Patel

platform: sifive/fu540: Replace cpu0 node fix-up with the new helper

2020-03-18T05:26:43Z

This replaces the FU540 specific cpu0 node "status" property fix-up with the newly introduced generic fdt_cpu_fixup() helper. Unlike previous logic, the helper routine does not test the "mmu-type" property to determine which node we should fix up, instead it uses sbi_platform_hart_disabled() API. Signed-off-by: Bin Meng Reviewed-by: Anup Patel