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#ifndef SYS_CORE_H
#define SYS_CORE_H
#ifndef SYS_CORE_C
extern char* os_info_v;
#endif
extern unsigned long cntfrq;
static inline unsigned long load32(unsigned long addr)
{
return *(volatile unsigned long*)addr;
}
static inline void store32(unsigned long value, unsigned long addr)
{
*(volatile unsigned long*)addr = value;
}
static inline void delay(unsigned long cycles)
{
asm volatile("__delay_%=: subs %[cycles], %[cycles], #1;bne __delay_%=\n"
: "=r"(cycles): [cycles]"0"(cycles) : "cc");
}
static inline void preserveregs(void)
{
asm volatile("push {r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11}");
}
static inline void restoreregs(void)
{
asm volatile("pop {r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11}");
}
static inline void* getsp(void)
{
void* out;
asm volatile ("mov %0, sp" : "=r"(out));
return out;
}
static inline void setsp(void* in)
{
asm volatile ("mov sp, %0" :: "r"(in));
}
static inline void* heap_end(void)
{
unsigned long value;
asm volatile ("ldr %0, =__bss_end": "=r"(value));
return (void*)value;
}
enum
{
// The offset for the MMIO area
#ifdef BSP23
MMIO_BASE = 0x3F000000, // For Raspberry Pi 2 and 3
#else
MMIO_BASE = 0xFE000000,
#endif
// The offsets for reach register.
GPIO_BASE = (MMIO_BASE + 0x200000),
// Controls actuation of pull up/down to ALL GPIO pins.
GPPUD = (GPIO_BASE + 0x94),
// Controls actuation of pull up/down for specific GPIO pin.
GPPUDCLK0 = (GPIO_BASE + 0x98),
// The base address for UART.
UART0_BASE = (GPIO_BASE + 0x1000), // for raspi4 0xFE201000, raspi2 & 3 0x3F201000, and 0x20201000 for raspi1
// The offsets for reach register for the UART.
UART0_DR = (UART0_BASE + 0x00),
UART0_RSRECR = (UART0_BASE + 0x04),
UART0_FR = (UART0_BASE + 0x18),
UART0_ILPR = (UART0_BASE + 0x20),
UART0_IBRD = (UART0_BASE + 0x24),
UART0_FBRD = (UART0_BASE + 0x28),
UART0_LCRH = (UART0_BASE + 0x2C),
UART0_CR = (UART0_BASE + 0x30),
UART0_IFLS = (UART0_BASE + 0x34),
UART0_IMSC = (UART0_BASE + 0x38),
UART0_RIS = (UART0_BASE + 0x3C),
UART0_MIS = (UART0_BASE + 0x40),
UART0_ICR = (UART0_BASE + 0x44),
UART0_DMACR = (UART0_BASE + 0x48),
UART0_ITCR = (UART0_BASE + 0x80),
UART0_ITIP = (UART0_BASE + 0x84),
UART0_ITOP = (UART0_BASE + 0x88),
UART0_TDR = (UART0_BASE + 0x8C),
// IRQ REGISTERS
IRQ_BASE = (MMIO_BASE + 0xB000),
IRQ_BASIC_PENDING = (IRQ_BASE + 0x200),
IRQ_PENDING1 = (IRQ_BASE + 0x204),
IRQ_PENDING2 = (IRQ_BASE + 0x208),
FIQ_CONTROL = (IRQ_BASE + 0x20C),
IRQ_ENABLE1 = (IRQ_BASE + 0x210),
IRQ_ENABLE2 = (IRQ_BASE + 0x214),
IRQ_BASIC_ENABLE = (IRQ_BASE + 0x218),
IRQ_DISABLE1 = (IRQ_BASE + 0x21C),
IRQ_DISABLE2 = (IRQ_BASE + 0x220),
IRQ_BASIC_DISABLE = (IRQ_BASE + 0x224),
// Peripherals Interrupts
UART_IRQ = 57,
GPIO_IRQ_0 = 49,
GPIO_IRQ_1 = 50,
GPIO_IRQ_2 = 51,
GPIO_IRQ_3 = 52,
FIQ_ENABLE_FLAG = 1<<7,
// ARM Peripheral Interrupts
TIMER_ARM_IRQ = 0,
MAILBOX_ARM_IRQ = 1,
DOORBELL0_ARM_IRQ = 2,
DOORBELL1_ARM_IRQ = 3,
GPU0HALT_ARM_IRQ = 4,
GPU1HALT_ARM_IRQ = 5,
// The offsets for Mailbox registers
MBOX_BASE = 0xB880,
MBOX_READ = (MBOX_BASE + 0x00),
MBOX_STATUS = (MBOX_BASE + 0x18),
MBOX_WRITE = (MBOX_BASE + 0x20),
GPU_INTERRUPTS_ROUTING = 0x4000000C,
CORE0_TIMER_IRQCNTL = 0x40000040,
CORE0_IRQ_SOURCE = 0x40000060,
/* Power Management, Reset controller and Watchdog registers */
//BCM2835_PERI_BASE = 0x3F000000,
BCM2835_PERI_BASE = 0x20000000,
PM_BASE = (BCM2835_PERI_BASE + 0x100000),
PM_RSTC = (PM_BASE+0x1c),
PM_WDOG = (PM_BASE+0x24),
PM_WDOG_RESET = 0x00000000,
PM_PASSWORD = 0x5a000000,
PM_WDOG_TIME_SET = 0x000fffff,
PM_RSTC_WRCFG_CLR = 0xffffffcf,
PM_RSTC_WRCFG_SET = 0x00000030,
PM_RSTC_WRCFG_FULL_RESET = 0x00000020,
PM_RSTC_RESET = 0x00000102,
};
void sysinit(void);
#endif
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