Merge tag 'riscv-for-linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix to align kexec'd kernels to PMD boundries

 - The T-Head dcache.cva encoding was incorrect, it has been fixed to
   invalidate all caches (as opposed to just the L1)

* tag 'riscv-for-linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: errata: fix T-Head dcache.cva encoding
  riscv: kexec: Align the kexeced kernel entry

2 files changed, 9 insertions, 3 deletions

diff --git a/arch/riscv/include/asm/errata_list.h b/arch/riscv/include/asm/errata_list.h
index e2ecd01bfac771..b55b434f005910 100644
--- a/arch/riscv/include/asm/errata_list.h
+++ b/arch/riscv/include/asm/errata_list.h
@@ -105,7 +105,7 @@ asm volatile(ALTERNATIVE(						\
  * | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
  *   0000001    01001      rs1       000      00000  0001011
  * dcache.cva rs1 (clean, virtual address)
- *   0000001    00100      rs1       000      00000  0001011
+ *   0000001    00101      rs1       000      00000  0001011
  *
  * dcache.cipa rs1 (clean then invalidate, physical address)
  * | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
@@ -118,7 +118,7 @@ asm volatile(ALTERNATIVE(						\
  *   0000000    11001     00000      000      00000  0001011
  */
 #define THEAD_inval_A0	".long 0x0265000b"
-#define THEAD_clean_A0	".long 0x0245000b"
+#define THEAD_clean_A0	".long 0x0255000b"
 #define THEAD_flush_A0	".long 0x0275000b"
 #define THEAD_SYNC_S	".long 0x0190000b"
 
diff --git a/arch/riscv/kernel/elf_kexec.c b/arch/riscv/kernel/elf_kexec.c
index f4099059ed8f25..e60fbd8660c4a5 100644
--- a/arch/riscv/kernel/elf_kexec.c
+++ b/arch/riscv/kernel/elf_kexec.c
@@ -98,7 +98,13 @@ static int elf_find_pbase(struct kimage *image, unsigned long kernel_len,
 	kbuf.image = image;
 	kbuf.buf_min = lowest_paddr;
 	kbuf.buf_max = ULONG_MAX;
-	kbuf.buf_align = PAGE_SIZE;
+
+	/*
+	 * Current riscv boot protocol requires 2MB alignment for
+	 * RV64 and 4MB alignment for RV32
+	 *
+	 */
+	kbuf.buf_align = PMD_SIZE;
 	kbuf.mem = KEXEC_BUF_MEM_UNKNOWN;
 	kbuf.memsz = ALIGN(kernel_len, PAGE_SIZE);
 	kbuf.top_down = false;