Wolfgang Denk ha scritto:
Are there any particular reasons why this code should stay in start.S ?
Never change a running system without need?
Yeah, though not technical is an important one indeed ;-) But since a SoC structure has been created I thought it was nice to have all the independent files cleaned. Just give it a try! Anyway I'll fully understand if you prefer not to touch a running system.
Best regards -P.Broggini
Signed-off-by: Paolo Broggini pbroggini@softool.ch
CHANGELOG: Cleanup of cpu/arm920t/start.S, S3C24x0 specific code moved into boards depended lowlevel_init.s Affected boards: sdmk2400, sdmk2410, vcma9, trab Patch by Paolo Broggini, 13 Oct 2005
diff --git a/board/mpl/vcma9/lowlevel_init.S b/board/mpl/vcma9/lowlevel_init.S --- a/board/mpl/vcma9/lowlevel_init.S +++ b/board/mpl/vcma9/lowlevel_init.S @@ -34,6 +34,10 @@
/* some parameters for the board */
+#define pWTCON 0x53000000 +#define INTMSK 0x4A000008 /* Interupt-Controller base addresses */ +#define INTSUBMSK 0x4A00001C +#define CLKDIVN 0x4C000014 /* clock divisor register */ #define BWSCON 0x48000000 #define PLD_BASE 0x2C000000 #define SDRAM_REG 0x2C000106 @@ -132,6 +136,30 @@ _TEXT_BASE:
.globl lowlevel_init lowlevel_init: + + /* + * Watchdog disable + */ + ldr r0, =pWTCON + mov r1, #0x0 + str r1, [r0] + + /* + * mask all IRQs by setting all bits in the INTMR - default + */ + mov r1, #0xffffffff + ldr r0, =INTMSK + str r1, [r0] + ldr r1, =0x3ff + ldr r0, =INTSUBMSK + str r1, [r0] + + /* FCLK:HCLK:PCLK = 1:2:4 */ + /* default FCLK is 120 MHz ! */ + ldr r0, =CLKDIVN + mov r1, #3 + str r1, [r0] + /* memory control configuration */ /* make r0 relative the current location so that it */ /* reads SMRDATA out of FLASH rather than memory ! */ diff --git a/board/smdk2400/lowlevel_init.S b/board/smdk2400/lowlevel_init.S --- a/board/smdk2400/lowlevel_init.S +++ b/board/smdk2400/lowlevel_init.S @@ -44,9 +44,13 @@ * */
+#define pWTCON 0x15300000 +#define INTMSK 0x14400008 /* Interupt-Controller base addresses */ +#define CLKDIVN 0x14800014 /* clock divisor register */ + /* memory controller */ -#define BWSCON 0x14000000 -#define BANKCON3 0x14000010 /* for cs8900, ethernet */ +#define BWSCON 0x14000000 +#define BANKCON3 0x14000010 /* for cs8900, ethernet */
/* Bank0 */ #define B0_Tacs 0x0 /* 0 clk */ @@ -127,6 +131,27 @@ _TEXT_BASE:
.globl lowlevel_init lowlevel_init: + + /* + * Watchdog disable + */ + ldr r0, =pWTCON + mov r1, #0x0 + str r1, [r0] + + /* + * mask all IRQs by setting all bits in the INTMR - default + */ + mov r1, #0xffffffff + ldr r0, =INTMSK + str r1, [r0] + + /* FCLK:HCLK:PCLK = 1:2:4 */ + /* default FCLK is 120 MHz ! */ + ldr r0, =CLKDIVN + mov r1, #3 + str r1, [r0] + /* memory control configuration */ /* make r0 relative the current location so that it */ /* reads SMRDATA out of FLASH rather than memory ! */ diff --git a/board/smdk2410/lowlevel_init.S b/board/smdk2410/lowlevel_init.S --- a/board/smdk2410/lowlevel_init.S +++ b/board/smdk2410/lowlevel_init.S @@ -42,7 +42,11 @@ * */
-#define BWSCON 0x48000000 +#define pWTCON 0x53000000 +#define INTMSK 0x4A000008 /* Interupt-Controller base addresses */ +#define INTSUBMSK 0x4A00001C +#define CLKDIVN 0x4C000014 /* clock divisor register */ +#define BWSCON 0x48000000
/* BWSCON */ #define DW8 (0x0) @@ -131,6 +135,30 @@ _TEXT_BASE:
.globl lowlevel_init lowlevel_init: + + /* + * Watchdog disable + */ + ldr r0, =pWTCON + mov r1, #0x0 + str r1, [r0] + + /* + * mask all IRQs by setting all bits in the INTMR - default + */ + mov r1, #0xffffffff + ldr r0, =INTMSK + str r1, [r0] + ldr r1, =0x3ff + ldr r0, =INTSUBMSK + str r1, [r0] + + /* FCLK:HCLK:PCLK = 1:2:4 */ + /* default FCLK is 120 MHz ! */ + ldr r0, =CLKDIVN + mov r1, #3 + str r1, [r0] + /* memory control configuration */ /* make r0 relative the current location so that it */ /* reads SMRDATA out of FLASH rather than memory ! */ diff --git a/board/trab/lowlevel_init.S b/board/trab/lowlevel_init.S --- a/board/trab/lowlevel_init.S +++ b/board/trab/lowlevel_init.S @@ -44,6 +44,10 @@ * */
+#define pWTCON 0x15300000 +#define INTMSK 0x14400008 /* Interupt-Controller base addresses */ +#define CLKDIVN 0x14800014 /* clock divisor register */ + /* memory controller */ #define BWSCON 0x14000000
@@ -142,6 +146,27 @@ _TEXT_BASE:
.globl lowlevel_init lowlevel_init: + + /* + * Watchdog disable + */ + ldr r0, =pWTCON + mov r1, #0x0 + str r1, [r0] + + /* + * mask all IRQs by setting all bits in the INTMR - default + */ + mov r1, #0xffffffff + ldr r0, =INTMSK + str r1, [r0] + + /* FCLK:HCLK:PCLK = 1:2:4 */ + /* default FCLK is 120 MHz ! */ + ldr r0, =CLKDIVN + mov r1, #3 + str r1, [r0] + /* memory control configuration */ /* make r0 relative the current location so that it */ /* reads SMRDATA out of FLASH rather than memory ! */ diff --git a/cpu/arm920t/start.S b/cpu/arm920t/start.S --- a/cpu/arm920t/start.S +++ b/cpu/arm920t/start.S @@ -1,8 +1,8 @@ /* * armboot - Startup Code for ARM920 CPU-core * - * Copyright (c) 2001 Marius Grger mag@sysgo.de - * Copyright (c) 2002 Alex Zpke azu@sysgo.de + * Copyright (c) 2001 Marius Grger mag@sysgo.de + * Copyright (c) 2002 Alex Zpke azu@sysgo.de * Copyright (c) 2002 Gary Jennejohn gj@denx.de * * See file CREDITS for list of people who contributed to this @@ -116,42 +116,6 @@ reset: orr r0,r0,#0xd3 msr cpsr,r0
-/* turn off the watchdog */ -#if defined(CONFIG_S3C2400) -# define pWTCON 0x15300000 -# define INTMSK 0x14400008 /* Interupt-Controller base addresses */ -# define CLKDIVN 0x14800014 /* clock divisor register */ -#elif defined(CONFIG_S3C2410) -# define pWTCON 0x53000000 -# define INTMSK 0x4A000008 /* Interupt-Controller base addresses */ -# define INTSUBMSK 0x4A00001C -# define CLKDIVN 0x4C000014 /* clock divisor register */ -#endif - -#if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) - ldr r0, =pWTCON - mov r1, #0x0 - str r1, [r0] - - /* - * mask all IRQs by setting all bits in the INTMR - default - */ - mov r1, #0xffffffff - ldr r0, =INTMSK - str r1, [r0] -# if defined(CONFIG_S3C2410) - ldr r1, =0x3ff - ldr r0, =INTSUBMSK - str r1, [r0] -# endif - - /* FCLK:HCLK:PCLK = 1:2:4 */ - /* default FCLK is 120 MHz ! */ - ldr r0, =CLKDIVN - mov r1, #3 - str r1, [r0] -#endif /* CONFIG_S3C2400 || CONFIG_S3C2410 */ - /* * we do sys-critical inits only at reboot, * not when booting from ram!