Commit Graph

6 Commits

Author SHA1 Message Date
Alin Jerpelea
6f14299dd0 boards: nxstyle fixes
nxstyle fixes to pass the CI check

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-03-18 22:58:27 -07:00
Gregory Nutt
ef604f8d43 z20x: Performance Improvements
- boards/z80/ez80/z20x/scripts/z20x_*.linkcmd:  Reduce from 4 to 1 wait state.  That i sufficient because of the slow clocking of the eZ80F92
  - boards/z80/ez80/z20x/src/w25_main.c:  Replace CRC algorithm with simple, less time consuming check sum.
  - boards/z80/ez80/z20x/configs/nsh:  Rename the nsh_ram configuration to just nsh
  - boards/z80/ez80/z80x/configs/hello: Add simpler program to make debugging the loader easier.
2020-03-14 00:05:38 +01:00
Gregory Nutt
859d694c78 z20x: Correct RAM wait states. 2020-03-05 17:49:58 -03:00
Gregory Nutt
161104c76a eZ80/z20x: Correct uninitialized stack memory
arch/z80/src/ez80/Toolchain.defs:  Correct some CFLAGS when optimization suppressed.

arch/z80/src/ez80/Kconfig arch/z80/src/ez80/ez80_emac.c:  Remove configuration option for selecting EMAC RAM address.  This is duplicated and possibly conflicting.  The correct address for the RAM is provided in the linker command file.  The RAM should be configured once and using this single definitions.

arch/z80/src/ez80/ez80_startup.asm and arch/z80/src/ez80/ez80f9*_init.asm.  Move RAM and FLAH intialization out of MCU-specific logic to common start-up logic.  We cannot call any functions until SRAM is initialized and the stack is properly initialized because the return address is stored on the stack.  Use internal SRAM for the IDLE stack to avoid the chicken'n'egg problem.

boards/z80/ez80/z20x/configs/sdboot/sdboot.zdsproj:  Discuss build environments.
2020-02-27 22:53:27 +01:00
Gregory Nutt
a9610e16bd boards/z80/ez80/z20x: Update CFLAGS and linker scripts.
arch/z80/src/ez80/Toolchain.defs:  Update some CFLAGS to match CFLAGS from ZDS-II IDE.  Apparently, we must say that the CPU is an eZ80F91 event when compiler for eZ80F92.
boards/z80/ez80/z20x:  Update linker scripts.
2020-02-26 21:12:01 +01:00
Gregory Nutt
5a3e8874bc boards/z80/ez80/z20x: Initial port to z20x board.
The Z20X is a simple expandable DIY computing system, built around the eZ80 microprocessor.  Reference: https://z20x.computer
2020-02-21 15:20:36 +01:00