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view src/cs/drivers/drv_app/r2d/lcds/D_Sample/r2d_board_dsample_ia.s @ 281:a75eefbf8be4

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Phone boot with PWON: weed out short button presses Every standard end user phone has a design provision, most naturally implemented in firmware, whereby the PWON button effects a boot only if it is held down long enough - short presses of this PWON button are detected, assumed to be spurious and cause the fw to power back off instead of proceeding with boot. The present change introduces this standard function in FreeCalypso.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 24 Sep 2021 02:03:08 +0000
parents 4e78acac3d88
children
line wrap: on
line source

 


 
  
  .state32

  .sect ".r2dlcd"


 .include "r2d_asm_configs.inc"
 .include "r2d_asm_utils.inc"
 .include "r2d_asm_patch_utils.inc"


 .if (R2D_ASM = R2D_ON)


 .ref _r2d_lcd_alpha_operator
 .ref _r2d_lcd_foreground_pixel
 .ref _r2d_lcd_to_color
 .ref _r2d_color_to_lcd

 .def _r2d_ialpha_op
 .def _r2d_iforeground_pixel_test
 
 .def _r2d_icolor_to_lcd
 .def _r2d_ilcd_to_color
 

 .global _r2d_lcd_start_copy
 .global _r2d_lcd_start_or
 .global _r2d_lcd_start_and
 .global _r2d_lcd_start_xor
 .global _r2d_lcd_start_notcopy
 .global _r2d_lcd_start_notor
 .global _r2d_lcd_start_notand
 .global _r2d_lcd_start_notxor
 .global _r2d_lcd_start_alpha
 .global _r2d_lcd_start_erase
 .global _r2d_lcd_start_foreground_pixel
 .global _r2d_start_get_color
 .global _r2d_start_color_to_lcd
 .global _r2d_start_lcd_to_color

_r2d_lcd_start_copy:
      MOV calca,calca
      MOV calcb,calca
      MOV calcb,calcb
_r2d_lcd_end_copy

_r2d_lcd_start_or:
      MOVS calca,calca,LSL #16
      MOVNEQ calcb,calca,LSR #16
	  NOP
_r2d_lcd_end_or

_r2d_lcd_start_and:
      MOV calca,calca
      AND calcb,calcb,calca
      MOV calcb,calcb
_r2d_lcd_end_and

_r2d_lcd_start_xor:
      MOV calca,calca
      EOR calcb,calcb,calca
      MOV calcb,calcb
_r2d_lcd_end_xor

_r2d_lcd_start_notcopy:
      MOV calca,calca
      MVN calcb,calca
      MOV calcb,calcb
_r2d_lcd_end_notcopy

_r2d_lcd_start_notor:
      MOV calca,calca
      ORR calcb,calcb,calca
      MVN calcb,calcb
_r2d_lcd_end_notor

_r2d_lcd_start_notand:
      MOV calca,calca
      AND calcb,calcb,calca
      MVN calcb,calcb
_r2d_lcd_end_notand

_r2d_lcd_start_notxor:
      MOV calca,calca
      EOR calcb,calcb,calca
      MVN calcb,calcb
_r2d_lcd_end_notxor

_r2d_lcd_start_alpha
  ; Identifying code telling the patcher that a special
  ; construct required to branch to a C function is used
    .long BRANCH_ID
  ; The absolute address of the C function which is going to be
  ; converted to a PC relative offset by the patcher
    .long _r2d_ialpha_op
_r2d_lcd_stop_alpha

_r2d_lcd_start_erase:
	  MOVS calca,calca,LSL #16
      MOVNEQ calcb,#0
	  NOP
_r2d_lcd_end_erase

_r2d_lcd_start_foreground_pixel
  ; Identifying code telling the patcher that a special
  ; construct required to branch to a C function is used
    .long BRANCH_ID
  ; The absolute address of the C function which is going to be
  ; converted to a PC relative offset by the patcher
    .long _r2d_iforeground_pixel_test
_r2d_lcd_stop_foreground_pixel


_r2d_start_lcd_to_color
  ; Identifying code telling the patcher that a special
  ; construct required to branch to a C function is used
    .long BRANCH_ID
  ; The absolute address of the C function which is going to be
  ; converted to a PC relative offset by the patcher
    .long _r2d_ilcd_to_color
_r2d_stop_lcd_to_color

_r2d_start_color_to_lcd
  ; Identifying code telling the patcher that a special
  ; construct required to branch to a C function is used
    .long BRANCH_ID
  ; The absolute address of the C function which is going to be
  ; converted to a PC relative offset by the patcher
    .long _r2d_icolor_to_lcd
_r2d_stop_color_to_lcd



  ; Stub function allowing to branch to a C one whose interface
  ; is UINT32 r2d_lcd_some_operator(UINT32 old,UINT32 value)
_r2d_ialpha_op:
    R2D_OP_SAVE_CONTEXT
    BL _r2d_lcd_alpha_operator
    R2D_OP_RESTORE_CONTEXT

  ; Check kind of pixel
_r2d_iforeground_pixel_test:
    R2D_COL_SAVE_CONTEXT
    BL _r2d_lcd_foreground_pixel
    R2D_COL_RESTORE_CONTEXT

  ; All color conversion subroutines
_r2d_icolor_to_lcd:
    R2D_COLCONV_SAVE_CONTEXT
    BL _r2d_color_to_lcd
    R2D_COLCONV_RESTORE_CONTEXT

_r2d_ilcd_to_color:
    R2D_COLCONV_SAVE_CONTEXT
    BL _r2d_lcd_to_color
    R2D_COLCONV_RESTORE_CONTEXT

 .endif
 .end