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Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/device/1733720')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/device/1733720 | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/device/1733720 b/results/classifier/deepseek-2-tmp/output/device/1733720 deleted file mode 100644 index 1b9faada6..000000000 --- a/results/classifier/deepseek-2-tmp/output/device/1733720 +++ /dev/null @@ -1,56 +0,0 @@ - -raspi2 with multiple CPU's #1 - -Greetings, - -I am running a small program for raspi2 (from http://wiki.osdev.org/ARM_RaspberryPi_Tutorial_C). - -This code writes "Hello World", but the output ir repeated 4 times. - -My thought was that this is emulating a 4 cpu core system. - -However, when I check the MPIDR registed for CPU number, it always returns 1. - -I git cloned github.com/qemu/qemu.git, made & installed on Acer ARM CB5-311 under Crouton/ubuntu. - - -./qemu.sh -1111 - -Linux:armv7l: ~/Downloads/RaspiTest/BareBones >>> uname -a -Linux localhost 3.10.18 #1 SMP Mon Nov 13 16:34:10 PST 2017 armv7l armv7l armv7l GNU/Linux - -Linux:armv7l: ~/Downloads/RaspiTest/BareBones >>> qemu-system-arm --version -QEMU emulator version 2.10.91 (v2.11.0-rc1-dirty) -Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers - -===== -static inline uint32_t read_mpdir(void) -{ - uint32_t id; - - asm volatile("mrc p15, 0, %[id], c0, c0, 0 @ read MIDR\n\t" - : [id] "=r" (id)); - return id; -} -====== -void kernel_main(uint32_t r0, uint32_t r1, uint32_t atags) -{ - // Declare as unused - (void) r0; - (void) r1; - (void) atags; - - uint32_t cpu_id; - - cpu_id = read_mpdir() & 0x03; - - uart_putc( "01234"[cpu_id] ); /* output is "1111" */ - - if (cpu_id == 0) { /* code never executes 8^( */ } - -====== qemu.sh -qemu-system-arm -m 256 -M raspi2 -no-reboot -serial stdio -kernel myos.elf - -Thanks much, --KenD \ No newline at end of file |