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authorMarc Gonzalez <marc_gonzalez@sigmadesigns.com>2015-12-15 10:41:13 +0100
committerOlof Johansson <olof@lixom.net>2015-12-22 15:10:31 -0800
commitd6de5b0294d74aefa16f78d050d1bcf6d5af84a7 (patch)
tree1e3dad4afe94b5f05883aee6abf67607dac1d7ce /arch/arm/mach-tango/setup.c
parent9d67d4624febcd14bd6719fb4913319f49201066 (diff)
ARM: tango4: Initial platform support
Support Sigma Designs ARM-based (specifically, Cortex-A9 MPCore r3p0) Tango4 "Secure Media Processor" platforms: smp8756, smp8758, smp8759 (8756 is single-core, the latter are dual-core). Note: 8758 vs 8759: same chip, different package. Support for older MIPS-based platforms can be found elsewhere: https://github.com/mansr/linux-tangox Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Reviewed-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-tango/setup.c')
-rw-r--r--arch/arm/mach-tango/setup.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/mach-tango/setup.c b/arch/arm/mach-tango/setup.c
new file mode 100644
index 000000000000..d86900550e63
--- /dev/null
+++ b/arch/arm/mach-tango/setup.c
@@ -0,0 +1,31 @@
+#include <linux/smp.h>
+#include <asm/mach/arch.h>
+#include <asm/hardware/cache-l2x0.h>
+#include "smc.h"
+
+static int tango4_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+ tango_set_aux_boot_addr(virt_to_phys(secondary_startup));
+ tango_start_aux_core(cpu);
+ return 0;
+}
+
+static struct smp_operations tango4_smp_ops __initdata = {
+ .smp_boot_secondary = tango4_boot_secondary,
+};
+
+CPU_METHOD_OF_DECLARE(tango4_smp, "sigma,tango4-smp", &tango4_smp_ops);
+
+static void tango_l2c_write(unsigned long val, unsigned int reg)
+{
+ if (reg == L2X0_CTRL)
+ tango_set_l2_control(val);
+}
+
+static const char *const tango_dt_compat[] = { "sigma,tango4", NULL };
+
+DT_MACHINE_START(TANGO_DT, "Sigma Tango DT")
+ .dt_compat = tango_dt_compat,
+ .l2c_aux_mask = ~0,
+ .l2c_write_sec = tango_l2c_write,
+MACHINE_END