git: 8176157d69b8 - stable/13 - mips: Extract HWREna configuration and call from APs

The branch stable/13 has been updated by jrtc27:

URL: https://cgit.FreeBSD.org/src/commit/?id=8176157d69b89a811f997cbbe490dfd57595f264

commit 8176157d69b89a811f997cbbe490dfd57595f264
Author:     Jessica Clarke <jrtc27@FreeBSD.org>
AuthorDate: 2024-12-13 21:37:00 +0000
Commit:     Jessica Clarke <jrtc27@FreeBSD.org>
CommitDate: 2024-12-13 21:37:00 +0000

    mips: Extract HWREna configuration and call from APs
    
    The intent of mips_get_identity is to perform any feature detection and
    corresponding global system configuration, but currently it is also
    abused to set HWREna.UL on the BSP when available, with APs being left
    unconfigured. Extract that part out into its own function that gets
    called after mips_get_identity on the BSP, and call it on the APs from
    smp_init_secondary.
    
    This is a direct commit to stable/13 as mips no longer exists in main.
    
    Reviewed by:    jhibbits
    Differential Revision:  https://reviews.freebsd.org/D48064
---
 sys/mips/include/md_var.h  |  1 +
 sys/mips/mips/cpu.c        | 21 ++++++++++++++++++---
 sys/mips/mips/mp_machdep.c |  3 +++
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/sys/mips/include/md_var.h b/sys/mips/include/md_var.h
index ac2b7b692139..cfc13c950d4f 100644
--- a/sys/mips/include/md_var.h
+++ b/sys/mips/include/md_var.h
@@ -71,6 +71,7 @@ void	mips_wait(void);
 
 void	mips_vector_init(void);
 void	mips_cpu_init(void);
+void	mips_hwrena_init(void);
 void	mips_pcpu0_init(void);
 void	mips_proc0_init(void);
 void	mips_postboot_fixup(void);
diff --git a/sys/mips/mips/cpu.c b/sys/mips/mips/cpu.c
index d504d6c34d14..fc8c9bddbc42 100644
--- a/sys/mips/mips/cpu.c
+++ b/sys/mips/mips/cpu.c
@@ -141,10 +141,11 @@ mips_get_identity(struct mips_cpuinfo *cpuinfo)
 
 	/* Check to see if UserLocal register is implemented. */
 	if (cfg3 & MIPS_CONFIG3_ULR) {
-		/* UserLocal register is implemented, enable it. */
+		/*
+		 * UserLocal register is implemented, enable it later in
+		 * mips_hwrena_init.
+		 */
 		cpuinfo->userlocal_reg = true;
-		tmp = mips_rd_hwrena();
-		mips_wr_hwrena(tmp | MIPS_HWRENA_UL);
 	} else {
 		/*
 		 * UserLocal register is not implemented. Patch
@@ -275,11 +276,25 @@ mips_get_identity(struct mips_cpuinfo *cpuinfo)
 #endif
 }
 
+void
+mips_hwrena_init(void)
+{
+	uint32_t reg;
+
+	reg = mips_rd_hwrena();
+
+	if (cpuinfo.userlocal_reg)
+		reg |= MIPS_HWRENA_UL;
+
+	mips_wr_hwrena(reg);
+}
+
 void
 mips_cpu_init(void)
 {
 	platform_cpu_init();
 	mips_get_identity(&cpuinfo);
+	mips_hwrena_init();
 	num_tlbentries = cpuinfo.tlb_nentries;
 	mips_wr_wired(0);
 	tlb_invalidate_all();
diff --git a/sys/mips/mips/mp_machdep.c b/sys/mips/mips/mp_machdep.c
index dfc3b59f0533..8a5903b2b514 100644
--- a/sys/mips/mips/mp_machdep.c
+++ b/sys/mips/mips/mp_machdep.c
@@ -52,6 +52,7 @@
 #include <machine/intr_machdep.h>
 #include <machine/cache.h>
 #include <machine/tlb.h>
+#include <machine/md_var.h>
 
 struct pcb stoppcbs[MAXCPU];
 
@@ -276,6 +277,8 @@ void
 smp_init_secondary(u_int32_t cpuid)
 {
 
+	mips_hwrena_init();
+
 	/* TLB */
 	mips_wr_wired(0);
 	tlb_invalidate_all();