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soc: intel_s1000: use CAVS DSP wall clock timer for SMP

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The DSP wall clock timer is a timer driven directly by
external oscillator and is external to the CPU core(s).
It provides a common and synchronized counter for all
CPU cores (which is useful for SMP), instead of
indepedently running local core timer (xtensa_timer).

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2019-02-21 15:05:29 -08:00 • committed by Anas Nashif
commit 3751c396cd
3 changed files with 39 additions and 8 deletions
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1
boards/xtensa/intel_s1000_crb/intel_s1000_crb_defconfig
View file

@ -1,7 +1,6 @@
# SPDX-License-Identifier: Apache-2.0
CONFIG_MAIN_STACK_SIZE=2048
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=400000000
CONFIG_SOC_INTEL_S1000=y
CONFIG_BOARD_INTEL_S1000_CRB=y

4
soc/xtensa/intel_s1000/Kconfig.defconfig
View file

@ -19,4 +19,8 @@ config XTENSA_KERNEL_CPU_PTR_SR
config SPI_DW_FIFO_DEPTH
default 32
config SYS_CLOCK_HW_CYCLES_PER_SEC
default 400000000 if XTENSA_TIMER
default 38400000 if CAVS_TIMER
endif

42
soc/xtensa/intel_s1000/soc.h
View file

@ -39,6 +39,8 @@
#define CAVS_L2_AGG_INT_LEVEL4 DT_CAVS_ICTL_2_IRQ
#define CAVS_L2_AGG_INT_LEVEL5 DT_CAVS_ICTL_3_IRQ
#define CAVS_ICTL_INT_CPU_OFFSET(x) (0x40 * x)
#define IOAPIC_EDGE 0
#define IOAPIC_HIGH 0
@ -100,6 +102,13 @@ struct soc_mclk_control_regs {
#define SOC_NUM_LPGPDMAC 3
#define SOC_NUM_CHANNELS_IN_DMAC 8
/* DSP Wall Clock Timers (0 and 1) */
#define DSP_WCT_IRQ(x) \
SOC_AGGREGATE_IRQ(0, (23 + x), CAVS_L2_AGG_INT_LEVEL2)
#define DSP_WCT_CS_TA(x) BIT(x)
#define DSP_WCT_CS_TT(x) BIT(4 + x)
/* SOC Resource Allocation Registers */
#define SOC_RESOURCE_ALLOC_REG_BASE 0x00071A60
/* bit field definition for LP GPDMA ownership register */
@ -147,20 +156,39 @@ struct soc_dmic_shim_regs {
struct soc_dsp_shim_regs {
u32_t reserved[8];
u64_t walclk;
u64_t dspwctcs;
u64_t dspwct0c;
u64_t dspwct1c;
u32_t reserved1[14];
union {
struct {
u32_t walclk32_lo;
u32_t walclk32_hi;
};
u64_t walclk;
};
u32_t dspwctcs;
u32_t reserved1[1];
union {
struct {
u32_t dspwct0c32_lo;
u32_t dspwct0c32_hi;
};
u64_t dspwct0c;
};
union {
struct {
u32_t dspwct1c32_lo;
u32_t dspwct1c32_hi;
};
u64_t dspwct1c;
};
u32_t reserved2[14];
u32_t clkctl;
u32_t clksts;
u32_t reserved2[4];
u32_t reserved3[4];
u16_t pwrctl;
u16_t pwrsts;
u32_t lpsctl;
u32_t lpsdmas0;
u32_t lpsdmas1;
u32_t reserved3[22];
u32_t reserved4[22];
};
/* Global Control registers */