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| -rw-r--r-- | README.md | 66 |
1 files changed, 37 insertions, 29 deletions
@@ -1,21 +1,9 @@ # Jobbed -## Supplemental Links - - https://www.raspberrypi.com/documentation/computers/processors.html - - https://datasheets.raspberrypi.com/bcm2835/bcm2835-peripherals.pdf - - https://datasheets.raspberrypi.com/bcm2836/bcm2836-peripherals.pdf - - https://github.com/eggman/raspberrypi/tree/master/qemu-raspi2 - - https://github.com/eggman/FreeRTOS-raspi3/blob/master/Demo/FreeRTOS_tick_config.c - - https://developer.arm.com/documentation/dui0802/b/A64-General-Instructions/A64-general-instructions-in-alphabetical-order?lang=en - - https://wiki.osdev.org/ARM_RaspberryPi - - https://elinux.org/RPi_Framebuffer - - https://github.com/bztsrc/raspi3-tutorial - - https://github.com/rust-embedded/rust-raspberrypi-OS-tutorials - - - // PRIV LEVL: https://developer.arm.com/documentation/den0013/d/ARM-Processor-Modes-and-Registers - - // MODES: https://developer.arm.com/documentation/ddi0406/c/System-Level-Architecture/The-System-Level-Programmers--Model/ARM-processor-modes-and-ARM-core-registers/ARM-processor-modes?lang=en - - // EXCEPTION HANDLING: https://developer.arm.com/documentation/ddi0406/c/System-Level-Architecture/The-System-Level-Programmers--Model/Exception-handling?lang=en - - // MODE REGISTERS: https://developer.arm.com/documentation/ddi0406/c/System-Level-Architecture/The-System-Level-Programmers--Model/ARM-processor-modes-and-ARM-core-registers/ARM-core-registers?lang=en +## Building (Debian) + - Clone the repository. + - Ensure you have the `arm-none-eabi-gcc` cross compiler installed. + - From the root of the directory, i.e. in `Jobbed`, execute `make` ## Todo - Finish Build Instructions @@ -29,16 +17,19 @@ - SPI Driver - GPIO Falling Edge IRQ -## SVC Calls - - Sysinfo - - Reboot? - - Mutex Create - - Mutex Lock - - Mutex Release - - Schedule - - Yield - - Fork - - Uart Write Buffer Add (Add reoccuring task to flush write buffer - RotatingBuffer) +## SVC Calls (In order) + - 0: Yield to threads in same priority + - 1: System Clock Time + - 2: Schedule + - 3: Add thread + - 4: Mutex Lock + - 5: Mutex Unlock + - 6: Semaphore Decrease + - 7: Semaphore Increase + - 8: Semaphore Increase by N + - 9: Cycle Counter + - A: Enable ARM Timer + - B: Disable ARM Timer Note: SYS and USER share registers but differ in privilege @@ -65,9 +56,6 @@ Note: SYS and USER share registers but differ in privilege - UND: sp_und,lr_und,SPSR_und - SYS: Same as user -# Program Status Registers - - https://developer.arm.com/documentation/ddi0406/c/System-Level-Architecture/The-System-Level-Programmers--Model/ARM-processor-modes-and-ARM-core-registers/Program-Status-Registers--PSRs-?lang=en#CIHJBHJA - # Memory Layout - 0x00004000 - 0x00008000 MMU Entries - 0x00008000 - 0x0000F000 Code @@ -76,3 +64,23 @@ Note: SYS and USER share registers but differ in privilege - 0x18000000 - 0x20000000 Thread Stacks - 0x3F000000 - 0x40000000 MMIO - 0x40000000 - 0xFFFFFFFF Local Peripherals + +## Supplemental Links + - https://www.raspberrypi.com/documentation/computers/processors.html + - https://datasheets.raspberrypi.com/bcm2835/bcm2835-peripherals.pdf + - https://datasheets.raspberrypi.com/bcm2836/bcm2836-peripherals.pdf + - https://github.com/eggman/raspberrypi/tree/master/qemu-raspi2 + - https://github.com/eggman/FreeRTOS-raspi3/blob/master/Demo/FreeRTOS_tick_config.c + - https://developer.arm.com/documentation/dui0802/b/A64-General-Instructions/A64-general-instructions-in-alphabetical-order?lang=en + - https://wiki.osdev.org/ARM_RaspberryPi + - https://elinux.org/RPi_Framebuffer + - https://github.com/bztsrc/raspi3-tutorial + - https://github.com/rust-embedded/rust-raspberrypi-OS-tutorials + + - // PRIV LEVL: https://developer.arm.com/documentation/den0013/d/ARM-Processor-Modes-and-Registers + - // MODES: https://developer.arm.com/documentation/ddi0406/c/System-Level-Architecture/The-System-Level-Programmers--Model/ARM-processor-modes-and-ARM-core-registers/ARM-processor-modes?lang=en + - // EXCEPTION HANDLING: https://developer.arm.com/documentation/ddi0406/c/System-Level-Architecture/The-System-Level-Programmers--Model/Exception-handling?lang=en + - // MODE REGISTERS: https://developer.arm.com/documentation/ddi0406/c/System-Level-Architecture/The-System-Level-Programmers--Model/ARM-processor-modes-and-ARM-core-registers/ARM-core-registers?lang=en + +# Program Status Registers + - https://developer.arm.com/documentation/ddi0406/c/System-Level-Architecture/The-System-Level-Programmers--Model/ARM-processor-modes-and-ARM-core-registers/Program-Status-Registers--PSRs-?lang=en#CIHJBHJA |