riscv: support for Svpbmt and D1 memory types

Adds support for Svpbmt, the "Supervisor-mode: page-based memory types" extension, which allows pages to be marked as non-cacheable and/or I/O. This also includes support for the Allwinner D1's page table attributes via the alternatives framework, which differ from Svpbmt in various ways but are necessary to make the D1 function. * palmer/riscv-d1: riscv: add memory-type errata for T-Head riscv: don't use global static vars to store alternative data riscv: remove FIXMAP_PAGE_IO and fall back to its default value riscv: add RISC-V Svpbmt extension support riscv: Fix accessing pfn bits in PTEs for non-32bit variants riscv: move boot alternatives to after fill_hwcap riscv: prevent compressed instructions in alternatives riscv: extend concatenated alternatives-lines to the same length riscv: implement ALTERNATIVE_2 macro riscv: implement module alternatives riscv: allow different stages with alternatives riscv: integrate alternatives better into the main architecture
2026-10-16 22:39:48 +00:00 · 2022-05-12 09:12:09 -07:00 · 2022-05-12 09:12:09 -07:00 · 93c0651617
commit 93c0651617
parent d26eee72d9 a35707c3d8
28 changed files with 724 additions and 161 deletions
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
--- a/arch/riscv/Kconfig.erratas
+++ b/arch/riscv/Kconfig.erratas
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
--- a/arch/riscv/errata/Makefile
+++ b/arch/riscv/errata/Makefile
--- a/arch/riscv/errata/alternative.c
+++ b/arch/riscv/errata/alternative.c
--- a/arch/riscv/errata/sifive/errata.c
+++ b/arch/riscv/errata/sifive/errata.c
--- a/arch/riscv/errata/thead/Makefile
+++ b/arch/riscv/errata/thead/Makefile
--- a/arch/riscv/errata/thead/errata.c
+++ b/arch/riscv/errata/thead/errata.c
--- a/arch/riscv/include/asm/alternative-macros.h
+++ b/arch/riscv/include/asm/alternative-macros.h
--- a/arch/riscv/include/asm/alternative.h
+++ b/arch/riscv/include/asm/alternative.h
--- a/arch/riscv/include/asm/errata_list.h
+++ b/arch/riscv/include/asm/errata_list.h
--- a/arch/riscv/include/asm/fixmap.h
+++ b/arch/riscv/include/asm/fixmap.h
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
--- a/arch/riscv/include/asm/pgtable-32.h
+++ b/arch/riscv/include/asm/pgtable-32.h
--- a/arch/riscv/include/asm/pgtable-64.h
+++ b/arch/riscv/include/asm/pgtable-64.h
--- a/arch/riscv/include/asm/pgtable-bits.h
+++ b/arch/riscv/include/asm/pgtable-bits.h
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
--- a/arch/riscv/include/asm/vendorid_list.h
+++ b/arch/riscv/include/asm/vendorid_list.h
--- a/arch/riscv/kernel/Makefile
+++ b/arch/riscv/kernel/Makefile
--- a/arch/riscv/kernel/alternative.c
+++ b/arch/riscv/kernel/alternative.c
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
--- a/arch/riscv/kernel/module.c
+++ b/arch/riscv/kernel/module.c
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c