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Diffstat (limited to 'arch/arm/cpu/arm720t/tegra20/cpu.h')
| -rw-r--r-- | arch/arm/cpu/arm720t/tegra20/cpu.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm720t/tegra20/cpu.h b/arch/arm/cpu/arm720t/tegra20/cpu.h new file mode 100644 index 000000000..6804cd7a3 --- /dev/null +++ b/arch/arm/cpu/arm720t/tegra20/cpu.h @@ -0,0 +1,100 @@ +/* + * (C) Copyright 2010-2011 + * NVIDIA Corporation <www.nvidia.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <asm/types.h> + +/* Stabilization delays, in usec */ +#define PLL_STABILIZATION_DELAY (300) +#define IO_STABILIZATION_DELAY (1000) + +#define NVBL_PLLP_KHZ (216000) + +#define PLLX_ENABLED (1 << 30) +#define CCLK_BURST_POLICY 0x20008888 +#define SUPER_CCLK_DIVIDER 0x80000000 + +/* Calculate clock fractional divider value from ref and target frequencies */ +#define CLK_DIVIDER(REF, FREQ) ((((REF) * 2) / FREQ) - 2) + +/* Calculate clock frequency value from reference and clock divider value */ +#define CLK_FREQUENCY(REF, REG) (((REF) * 2) / (REG + 2)) + +/* AVP/CPU ID */ +#define PG_UP_TAG_0_PID_CPU 0x55555555 /* CPU aka "a9" aka "mpcore" */ +#define PG_UP_TAG_0 0x0 + +#define CORESIGHT_UNLOCK 0xC5ACCE55; + +/* AP20-Specific Base Addresses */ + +/* AP20 Base physical address of SDRAM. */ +#define AP20_BASE_PA_SDRAM 0x00000000 +/* AP20 Base physical address of internal SRAM. */ +#define AP20_BASE_PA_SRAM 0x40000000 +/* AP20 Size of internal SRAM (256KB). */ +#define AP20_BASE_PA_SRAM_SIZE 0x00040000 +/* AP20 Base physical address of flash. */ +#define AP20_BASE_PA_NOR_FLASH 0xD0000000 +/* AP20 Base physical address of boot information table. */ +#define AP20_BASE_PA_BOOT_INFO AP20_BASE_PA_SRAM + +/* + * Super-temporary stacks for EXTREMELY early startup. The values chosen for + * these addresses must be valid on ALL SOCs because this value is used before + * we are able to differentiate between the SOC types. + * + * NOTE: The since CPU's stack will eventually be moved from IRAM to SDRAM, its + * stack is placed below the AVP stack. Once the CPU stack has been moved, + * the AVP is free to use the IRAM the CPU stack previously occupied if + * it should need to do so. + * + * NOTE: In multi-processor CPU complex configurations, each processor will have + * its own stack of size CPU_EARLY_BOOT_STACK_SIZE. CPU 0 will have a + * limit of CPU_EARLY_BOOT_STACK_LIMIT. Each successive CPU will have a + * stack limit that is CPU_EARLY_BOOT_STACK_SIZE less then the previous + * CPU. + */ + +/* Common AVP early boot stack limit */ +#define AVP_EARLY_BOOT_STACK_LIMIT \ + (AP20_BASE_PA_SRAM + (AP20_BASE_PA_SRAM_SIZE/2)) +/* Common AVP early boot stack size */ +#define AVP_EARLY_BOOT_STACK_SIZE 0x1000 +/* Common CPU early boot stack limit */ +#define CPU_EARLY_BOOT_STACK_LIMIT \ + (AVP_EARLY_BOOT_STACK_LIMIT - AVP_EARLY_BOOT_STACK_SIZE) +/* Common CPU early boot stack size */ +#define CPU_EARLY_BOOT_STACK_SIZE 0x1000 + +#define EXCEP_VECTOR_CPU_RESET_VECTOR (NV_PA_EVP_BASE + 0x100) +#define CSITE_CPU_DBG0_LAR (NV_PA_CSITE_BASE + 0x10FB0) +#define CSITE_CPU_DBG1_LAR (NV_PA_CSITE_BASE + 0x12FB0) + +#define FLOW_CTLR_HALT_COP_EVENTS (NV_PA_FLOW_BASE + 4) +#define FLOW_MODE_STOP 2 +#define HALT_COP_EVENT_JTAG (1 << 28) +#define HALT_COP_EVENT_IRQ_1 (1 << 11) +#define HALT_COP_EVENT_FIQ_1 (1 << 9) + +void start_cpu(u32 reset_vector); +int ap20_cpu_is_cortexa9(void); +void halt_avp(void) __attribute__ ((noreturn)); |