svn commit: r367078 - head/sys/riscv/riscv

[Kristof Provost]

Author: kp
Date: Tue Oct 27 12:44:49 2020
New Revision: 367078
URL: https://svnweb.freebsd.org/changeset/base/367078

Log:
  riscv: Minor cleanup in startup code
  
   - remove setting of register value which is not used until the next value is
     set
   - Use the L2_SHIFT constant when setting up L2 superpages
  
  Submitted by:	Antonin Houska <ah AT melesmeles DOT cz>

Modified:
  head/sys/riscv/riscv/locore.S

Modified: head/sys/riscv/riscv/locore.S
==============================================================================
--- head/sys/riscv/riscv/locore.S	Tue Oct 27 12:32:17 2020	(r367077)
+++ head/sys/riscv/riscv/locore.S	Tue Oct 27 12:44:49 2020	(r367078)
@@ -135,10 +135,9 @@ pagetables:
 
 	/* Level 2 superpages (512 x 2MiB) */
 	lla	s1, pagetable_l2
-	srli	t4, s9, 21		/* Div physmem base by 2 MiB */
+	srli	t4, s9, L2_SHIFT	/* Div physmem base by 2 MiB */
 	li	t2, 512			/* Build 512 entries */
 	add	t3, t4, t2
-	li	t5, 0
 	li	t0, (PTE_KERN | PTE_X)
 1:
 	slli	t2, t4, PTE_PPN1_S	/* << PTE_PPN1_S */