homeOS is a small portable RTOS. x86 version has a working scheduler. ARM version is showing signs of life. C code is able to use UART PL011 to print out messages. RTC, Interrupts, Scheduler on ARM next step.
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Project Information Updated
vasantharam changed the public information on the homeOS project -
homeOS homeOS.2 file released: homeOS.23.tar.gz
1. Ability to boot in qemu. 2. Fix to doIRQ, mask used was incorrect. 3. Fix to the problem that a new task was not scheduling out. The reason was that archSwitchTo was doing a ret into the start of the new task, unlike regular task switches, this does not cause a IRET, which pops back eflags, that would have resulted in interrupt flag to be set. 4. Implementation of archLockScheduler/archUnlockScheduler 5. Cleanup of code/ better arch/independent abstraction. 6. Addition of ARM Architecture directory and start.S that transfers control to C source 7. Clean up of makefile/linker script, so as to allow arm-cross- compile. New script configure to configure makefiles/linker scripts for the correct target. 8. Fixed linker_script.arm.lds and -Ttext value to 0x10000 instead of 0x0. qemu loads at 0x10000 (appears like linux wants it there).
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File released: /homeOS/homeOS.2/homeOS.23.tar.gz
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Project Information Updated
vasantharam changed the public information on the homeOS project -
homeOS homeOS.2 file released: homeOS.22.tar.gz
1. Ability to boot in qemu. 2. Fix to doIRQ, mask used was incorrect. 3. Fix to the problem that a new task was not scheduling out. The reason was that archSwitchTo was doing a ret into the start of the new task, unlike regular task switches, this does not cause a IRET, which pops back eflags, that would have resulted in interrupt flag to be set. 4. Implementation of archLockScheduler/archUnlockScheduler 5. Cleanup of code/ better arch/independent abstraction. 6. Addition of ARM Architecture directory and start.S that transfers control to C source 7. Clean up of makefile/linker script, so as to allow arm-cross- compile. New script configure to configure makefiles/linker scripts for the correct target. 8. Fixed linker_script.arm.lds and -Ttext value to 0x10000 instead of 0x0. qemu loads at 0x10000 (appears like linux wants it there).
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File released: /homeOS/homeOS.2/homeOS.22.tar.gz
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homeOS homeOS.2 file released: homeOS.21.tar.gz
1. Ability to boot in qemu. 2. Fix to doIRQ, mask used was incorrect. 3. Fix to the problem that a new task was not scheduling out. The reason was that archSwitchTo was doing a ret into the start of the new task, unlike regular task switches, this does not cause a IRET, which pops back eflags, that would have resulted in interrupt flag to be set. 4. Implementation of archLockScheduler/archUnlockScheduler 5. Cleanup of code/ better arch/independent abstraction. 6. Addition of ARM Architecture directory and start.S that transfers control to C source 7. Clean up of makefile/linker script, so as to allow arm-cross- compile. New script configure to configure makefiles/linker scripts for the correct target. 8. Fixed linker_script.arm.lds and -Ttext value to 0x10000 instead of 0x0. qemu loads at 0x10000 (appears like linux wants it there).
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File released: /homeOS/homeOS.2/homeOS.21.tar.gz
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homeOS homeOS.2 file released: homeOS.2.tar.gz
1. Ability to boot in qemu. 2. Fix to doIRQ, mask used was incorrect. 3. Fix to the problem that a new task was not scheduling out. The reason was that archSwitchTo was doing a ret into the start of the new task, unlike regular task switches, this does not cause a IRET, which pops back eflags, that would have resulted in interrupt flag to be set. 4. Implementation of archLockScheduler/archUnlockScheduler 5. Cleanup of code/ better arch/independent abstraction. 6. Addition of ARM Architecture directory and start.S that transfers control to C source 7. Clean up of makefile/linker script, so as to allow arm-cross- compile. New script configure to configure makefiles/linker scripts for the correct target. 8. Fixed linker_script.arm.lds and -Ttext value to 0x10000 instead of 0x0. qemu loads at 0x10000 (appears like linux wants it there).
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File released: /homeOS/homeOS.2/homeOS.2.tar.gz
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