setupebi2.cmm

来自「QUALCOMM JNAND DRIVER」· CMM 代码 · 共 56 行

;****************************************************************************
;**           SetupEBI2.CMM                                               **
;**           This script sets up MSM6250's EBI2                           **
;**                                                                        **
;**           Changes:                                                     **
;**           05-12-03   MSM6250 changes                                   **
;**           06-05-02   First version                                     **
;****************************************************************************

;  
; BEWARE that this script has different behavior based on the value in &HCLK_RATE
; -- timing values are calculated on the fly, based off HCLK_RATE


; setup EBI2_CFG, set for NAND flash enable and ARM priority
d.out &EBI2_CFG %LONG 0x02

;GPn_CFG0, RAM2_CFG0, ROM2_CFG0, configures timing
d.out &GP0_CFG0 %long 0x03111122 
d.out &GP1_CFG0 %long 0x03111122 
d.out &RAM2_CFG0 %long 0x03111122 
d.out &ROM2_CFG0 %long 0x03111122 
;EBI1_CSn_CFG1, configures bus sizing and write protect 
d.out &GP0_CFG1 %byte 0x00 ;ram is 16 bit device and user can write memory
d.out &GP1_CFG1 %byte 0x00 
d.out &RAM2_CFG1 %byte 0x00
d.out &ROM2_CFG1 %byte 0x00 

; LCD setup
d.out &LCD_CFG0 %LONG 0x77770807
d.out &LCD_CFG1 %LONG 0x00

; MSM_BRIDGE_CFG
; Not configured.  Use default value.
d.out &MSM_BRIDGE_CFG %LONG 0x00

; AUXMSM_BRIDGE_CFG 
; AUXMSM bridge access parameters control the hold cycles, setup cycles, and
; wait cycles for the AUXMSM-uP interface.  The register is uninitialized after
; power-up.  It is initialized to 0x0 here, to be the same as the default value
; for MSM_ACCESS_CFG.
d.out &AUXMSM_BRIDGE_CFG %LONG 0x00

; Setup GPIO2 bridge to uP (setup, hold times)
;d.out &GPIO2_ACCESS_CFG %LONG 0x29111                            
d.out &GPIO2_ACCESS_CFG %LONG 0x0                            
 
;MDSP_INTF_CFG, default state
d.out &MDSP_INTF_CFG %byte 0x07 

; ADSP_INTF_CFG
; ADSP_INTF_CFG is a write-only register, and the power up value cannot be 
; verified easily.  To be safe, set the register to default values.
d.out &ADSP_INTF_CFG %byte 0x07