svn commit: r294426 - in head/sys/arm/mv: . armada38x
Zbigniew Bodek
zbb at FreeBSD.org
Wed Jan 20 13:55:53 UTC 2016
Author: zbb
Date: Wed Jan 20 13:55:51 2016
New Revision: 294426
URL: https://svnweb.freebsd.org/changeset/base/294426
Log:
Enable SCU unit for Armada38x
Valid SCU operation is necessary for SMP interoperability.
Initialization function armada38x_enable_scu() was added.
Reviewed by: andrew, ian
Obtained from: Semihalf
Sponsored by: Stormshield
Submitted by: Bartosz Szczepanek <bsz at semihalf.com>
Differential revision: https://reviews.freebsd.org/D4220
Modified:
head/sys/arm/mv/armada38x/armada38x.c
head/sys/arm/mv/mv_machdep.c
head/sys/arm/mv/mvreg.h
Modified: head/sys/arm/mv/armada38x/armada38x.c
==============================================================================
--- head/sys/arm/mv/armada38x/armada38x.c Wed Jan 20 13:53:33 2016 (r294425)
+++ head/sys/arm/mv/armada38x/armada38x.c Wed Jan 20 13:55:51 2016 (r294426)
@@ -39,6 +39,7 @@ __FBSDID("$FreeBSD$");
#include <arm/mv/mvvar.h>
int armada38x_win_set_iosync_barrier(void);
+int armada38x_scu_enable(void);
uint32_t
get_tclk(void)
@@ -78,3 +79,25 @@ armada38x_win_set_iosync_barrier(void)
return (rv);
}
+
+int
+armada38x_scu_enable(void)
+{
+ bus_space_handle_t vaddr_scu;
+ int rv;
+ uint32_t val;
+
+ rv = bus_space_map(fdtbus_bs_tag, (bus_addr_t)MV_SCU_BASE,
+ MV_SCU_REGS_LEN, 0, &vaddr_scu);
+ if (rv != 0)
+ return (rv);
+
+ /* Enable SCU */
+ val = bus_space_read_4(fdtbus_bs_tag, vaddr_scu, MV_SCU_REG_CTRL);
+ if (!(val & MV_SCU_ENABLE))
+ bus_space_write_4(fdtbus_bs_tag, vaddr_scu, 0,
+ val | MV_SCU_ENABLE);
+
+ bus_space_unmap(fdtbus_bs_tag, vaddr_scu, MV_SCU_REGS_LEN);
+ return (0);
+}
Modified: head/sys/arm/mv/mv_machdep.c
==============================================================================
--- head/sys/arm/mv/mv_machdep.c Wed Jan 20 13:53:33 2016 (r294425)
+++ head/sys/arm/mv/mv_machdep.c Wed Jan 20 13:55:51 2016 (r294426)
@@ -68,6 +68,7 @@ void armadaxp_l2_init(void);
#endif
#if defined(SOC_MV_ARMADA38X)
int armada38x_win_set_iosync_barrier(void);
+int armada38x_scu_enable(void);
#endif
#define MPP_PIN_MAX 68
@@ -257,6 +258,8 @@ platform_late_init(void)
/* Set IO Sync Barrier bit for all Mbus devices */
if (armada38x_win_set_iosync_barrier() != 0)
printf("WARNING: could not map CPU Subsystem registers\n");
+ if (armada38x_scu_enable() != 0)
+ printf("WARNING: could not enable SCU\n");
#endif
}
Modified: head/sys/arm/mv/mvreg.h
==============================================================================
--- head/sys/arm/mv/mvreg.h Wed Jan 20 13:53:33 2016 (r294425)
+++ head/sys/arm/mv/mvreg.h Wed Jan 20 13:55:51 2016 (r294426)
@@ -34,6 +34,8 @@
#ifndef _MVREG_H_
#define _MVREG_H_
+#include <arm/mv/mvwin.h>
+
#if defined(SOC_MV_DISCOVERY)
#define IRQ_CAUSE_ERROR 0x0
#define IRQ_CAUSE 0x4
@@ -452,4 +454,15 @@
#define MV_DRBL_MASK(d,u) (0x10 * (u) + 0x8 * (d) + 0x4)
#define MV_DRBL_MSG(m,d,u) (0x10 * (u) + 0x8 * (d) + 0x4 * (m) + 0x30)
#endif
+
+/*
+ * SCU
+ */
+#if defined(SOC_MV_ARMADA38X)
+#define MV_SCU_BASE (MV_BASE + 0xc000)
+#define MV_SCU_REGS_LEN 0x100
+#define MV_SCU_REG_CTRL 0
+#define MV_SCU_ENABLE 1
+#endif
+
#endif /* _MVREG_H_ */
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