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author | Megan Wachs <megan@sifive.com> | 2016-11-30 10:55:18 -0800 |
---|---|---|
committer | GitHub <noreply@github.com> | 2016-11-30 10:55:18 -0800 |
commit | ae5f878d6acadabaa671a7a30b87e16eb1d718a7 (patch) | |
tree | 20749a4e80815136d2129486b25202427b9ea30b /bsp/env/freedom-e300-arty/init.c | |
parent | e12b0338d24597f12263322216fbe4e6c6b8e12a (diff) |
Bump Everything to Match new Freedom Repo (#8)
* Bump tool versions
* Use version of OpenOCD which can load programs into flash
* Bump OpenOCD to Handle ISSI Flash Programming
* Update Header files
* add initial support for hifive1
* add dhrystone
* add clock helper functions
* add openocd cfg file
* Demo_GPIO checkpoint -- compiles and runs but no blinky LEDs
* Remove riscv-tests submodule
* Remove FPGA files, as they are no longer relevant to this Repository
* Add openocd_upload script
* Add Pinmux Mappings
Adding the pinmux mappings to the Platform Header
* Add IOF Mappings to platform header
* Re-order the IOF Mapping declarations
* Add more useful things to platform headers
* Get GPIO Demo working again (except interrupts aren't working)
* Update README with more OS packages needed
A bare ubuntu-16.04.1-server installation could not run `make tools`
without these packages.
* bump openocd to get SCKDIV fix
* Remove duplicated help text for run_debug target
* Add package to README that is needed for openocd build
Without this package I was seeing two different failures like below
when running `make tools`.
/home/scottj/freedom-e-sdk/openocd/configure: line 4533: syntax error near unexpected token `0.23'
/home/scottj/freedom-e-sdk/openocd/configure: line 4533: `PKG_PROG_PKG_CONFIG(0.23)'
Makefile:70: recipe for target '/home/scottj/freedom-e-sdk/toolchain/bin/openocd' failed
make: *** [/home/scottj/freedom-e-sdk/toolchain/bin/openocd] Error 2
... or ...
+ autoconf
configure.ac:12: error: possibly undefined macro: AC_MSG_WARN
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
configure.ac:240: error: possibly undefined macro: AC_MSG_NOTICE
configure.ac:342: error: possibly undefined macro: AC_DEFINE
Makefile:70: recipe for target '/home/scottj/freedom-e-sdk/toolchain/bin/openocd' failed
make: *** [/home/scottj/freedom-e-sdk/toolchain/bin/openocd] Error 1
* Bump OpenOCD to not overwrite SCKDIV when flashing
* Roll back CoreMark
Diffstat (limited to 'bsp/env/freedom-e300-arty/init.c')
-rw-r--r-- | bsp/env/freedom-e300-arty/init.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/bsp/env/freedom-e300-arty/init.c b/bsp/env/freedom-e300-arty/init.c new file mode 100644 index 0000000..36272f7 --- /dev/null +++ b/bsp/env/freedom-e300-arty/init.c @@ -0,0 +1,61 @@ +#include <stdint.h> +#include <unistd.h> + +#include "platform.h" +#include "encoding.h" + +extern int main(int argc, char** argv); + +uint32_t get_cpu_freq() +{ + return 65000000; +} + +static void uart_init(size_t baud_rate) +{ + GPIO_REG(GPIO_IOF_SEL) &= ~IOF0_UART0_MASK; + GPIO_REG(GPIO_IOF_EN) |= IOF0_UART0_MASK; + UART0_REG(UART_REG_DIV) = get_cpu_freq() / baud_rate - 1; + UART0_REG(UART_REG_TXCTRL) |= UART_TXEN; +} + + +#ifdef USE_PLIC +extern void handle_m_ext_interrupt(); +#endif + +#ifdef USE_M_TIME +extern void handle_m_time_interrupt(); +#endif + +uintptr_t handle_trap(uintptr_t mcause, uintptr_t epc) +{ + if (0){ +#ifdef USE_PLIC + // External Machine-Level interrupt from PLIC + } else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_EXT)) { + handle_m_ext_interrupt(); +#endif +#ifdef USE_M_TIME + // External Machine-Level interrupt from PLIC + } else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_TIMER)){ + handle_m_time_interrupt(); +#endif + } + else { + write(1, "trap\n", 5); + _exit(1 + mcause); + } + return epc; +} + +void _init() +{ + uart_init(115200); + + printf("core freq at %d Hz\n", get_cpu_freq()); + + write_csr(mtvec, &handle_trap); + + _exit(main(0, NULL)); +} |