diff options
| author | Marc Gonzalez <marc_gonzalez@sigmadesigns.com> | 2015-12-15 10:41:13 +0100 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2015-12-22 15:10:31 -0800 |
| commit | d6de5b0294d74aefa16f78d050d1bcf6d5af84a7 (patch) | |
| tree | 1e3dad4afe94b5f05883aee6abf67607dac1d7ce /arch/arm/mach-tango/setup.c | |
| parent | 9d67d4624febcd14bd6719fb4913319f49201066 (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.c | 31 |
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 |