diff options
Diffstat (limited to 'arch/blackfin/cpu')
| -rw-r--r-- | arch/blackfin/cpu/cpu.c | 16 | ||||
| -rw-r--r-- | arch/blackfin/cpu/initcode.c | 47 | ||||
| -rw-r--r-- | arch/blackfin/cpu/initcode.h | 71 |
3 files changed, 84 insertions, 50 deletions
diff --git a/arch/blackfin/cpu/cpu.c b/arch/blackfin/cpu/cpu.c index 18dbdf7..6a0bcca 100644 --- a/arch/blackfin/cpu/cpu.c +++ b/arch/blackfin/cpu/cpu.c @@ -19,6 +19,7 @@ #include "cpu.h" #include "serial.h" +#include "initcode.h" ulong bfin_poweron_retx; @@ -44,13 +45,16 @@ void cpu_init_f(ulong bootflag, ulong loaded_from_ldr) extern char _sdata_l1[], _data_l1_lma[], _data_l1_len[]; memcpy(&_sdata_l1, &_data_l1_lma, (unsigned long)_data_l1_len); } -#if defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__) - /* The BF537 bootrom will reset the EBIU_AMGCTL register on us - * after it has finished loading the LDR. So configure it again. + + /* + * Make sure our async settings are committed. Some bootroms + * (like the BF537) will reset some registers on us after it + * has finished loading the LDR. Or if we're booting over + * JTAG, the initcode never got a chance to run. Or if we + * aren't booting from parallel flash, the initcode skipped + * this step completely. */ - else - bfin_write_EBIU_AMGCTL(CONFIG_EBIU_AMGCTL_VAL); -#endif + program_async_controller(NULL); /* Save RETX so we can pass it while booting Linux */ bfin_poweron_retx = bootflag; diff --git a/arch/blackfin/cpu/initcode.c b/arch/blackfin/cpu/initcode.c index 61dc5ab..917b7f9 100644 --- a/arch/blackfin/cpu/initcode.c +++ b/arch/blackfin/cpu/initcode.c @@ -4,7 +4,7 @@ * cannot make any function calls as it may be executed all by itself by * the Blackfin's bootrom in LDR format. * - * Copyright (c) 2004-2008 Analog Devices Inc. + * Copyright (c) 2004-2011 Analog Devices Inc. * * Licensed under the GPL-2 or later. */ @@ -107,6 +107,8 @@ static inline void serial_putc(char c) continue; } +#include "initcode.h" + __attribute__((always_inline)) static inline void program_nmi_handler(void) { @@ -172,21 +174,6 @@ program_nmi_handler(void) # define CONFIG_PLL_CTL_VAL (SPORT_HYST | (CONFIG_VCO_MULT << 9) | CONFIG_CLKIN_HALF) #endif -#ifndef CONFIG_EBIU_RSTCTL_VAL -# define CONFIG_EBIU_RSTCTL_VAL 0 /* only MDDRENABLE is useful */ -#endif -#if ((CONFIG_EBIU_RSTCTL_VAL & 0xFFFFFFC4) != 0) -# error invalid EBIU_RSTCTL value: must not set reserved bits -#endif - -#ifndef CONFIG_EBIU_MBSCTL_VAL -# define CONFIG_EBIU_MBSCTL_VAL 0 -#endif - -#if defined(CONFIG_EBIU_DDRQUE_VAL) && ((CONFIG_EBIU_DDRQUE_VAL & 0xFFFF8000) != 0) -# error invalid EBIU_DDRQUE value: must not set reserved bits -#endif - /* Make sure our voltage value is sane so we don't blow up! */ #ifndef CONFIG_VR_CTL_VAL # define BFIN_CCLK ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT) / CONFIG_CCLK_DIV) @@ -642,34 +629,6 @@ check_hibernation(ADI_BOOT_DATA *bs, u16 vr_ctl, bool put_into_srfs) serial_putc('e'); } -__attribute__((always_inline)) static inline void -program_async_controller(ADI_BOOT_DATA *bs) -{ - serial_putc('a'); - - /* Program the async banks controller. */ - bfin_write_EBIU_AMBCTL0(CONFIG_EBIU_AMBCTL0_VAL); - bfin_write_EBIU_AMBCTL1(CONFIG_EBIU_AMBCTL1_VAL); - bfin_write_EBIU_AMGCTL(CONFIG_EBIU_AMGCTL_VAL); - - serial_putc('b'); - - /* Not all parts have these additional MMRs. */ -#ifdef EBIU_MBSCTL - bfin_write_EBIU_MBSCTL(CONFIG_EBIU_MBSCTL_VAL); -#endif -#ifdef EBIU_MODE -# ifdef CONFIG_EBIU_MODE_VAL - bfin_write_EBIU_MODE(CONFIG_EBIU_MODE_VAL); -# endif -# ifdef CONFIG_EBIU_FCTL_VAL - bfin_write_EBIU_FCTL(CONFIG_EBIU_FCTL_VAL); -# endif -#endif - - serial_putc('c'); -} - BOOTROM_CALLED_FUNC_ATTR void initcode(ADI_BOOT_DATA *bs) { diff --git a/arch/blackfin/cpu/initcode.h b/arch/blackfin/cpu/initcode.h new file mode 100644 index 0000000..e0aad6d --- /dev/null +++ b/arch/blackfin/cpu/initcode.h @@ -0,0 +1,71 @@ +/* + * Code for early processor initialization + * + * Copyright (c) 2004-2011 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __BFIN_INITCODE_H__ +#define __BFIN_INITCODE_H__ + +#include <asm/mach-common/bits/bootrom.h> + +#ifndef BFIN_IN_INITCODE +# define serial_putc(c) +#endif + +#ifndef CONFIG_EBIU_RSTCTL_VAL +# define CONFIG_EBIU_RSTCTL_VAL 0 /* only MDDRENABLE is useful */ +#endif +#if ((CONFIG_EBIU_RSTCTL_VAL & 0xFFFFFFC4) != 0) +# error invalid EBIU_RSTCTL value: must not set reserved bits +#endif + +#ifndef CONFIG_EBIU_MBSCTL_VAL +# define CONFIG_EBIU_MBSCTL_VAL 0 +#endif + +#if defined(CONFIG_EBIU_DDRQUE_VAL) && ((CONFIG_EBIU_DDRQUE_VAL & 0xFFFF8000) != 0) +# error invalid EBIU_DDRQUE value: must not set reserved bits +#endif + +__attribute__((always_inline)) static inline void +program_async_controller(ADI_BOOT_DATA *bs) +{ +#ifdef BFIN_IN_INITCODE + /* + * We really only need to setup the async banks early if we're + * booting out of it. Otherwise, do it later on in cpu_init. + */ + if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS && + CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_PARA) + return; +#endif + + serial_putc('a'); + + /* Program the async banks controller. */ + bfin_write_EBIU_AMBCTL0(CONFIG_EBIU_AMBCTL0_VAL); + bfin_write_EBIU_AMBCTL1(CONFIG_EBIU_AMBCTL1_VAL); + bfin_write_EBIU_AMGCTL(CONFIG_EBIU_AMGCTL_VAL); + + serial_putc('b'); + + /* Not all parts have these additional MMRs. */ +#ifdef EBIU_MBSCTL + bfin_write_EBIU_MBSCTL(CONFIG_EBIU_MBSCTL_VAL); +#endif +#ifdef EBIU_MODE +# ifdef CONFIG_EBIU_MODE_VAL + bfin_write_EBIU_MODE(CONFIG_EBIU_MODE_VAL); +# endif +# ifdef CONFIG_EBIU_FCTL_VAL + bfin_write_EBIU_FCTL(CONFIG_EBIU_FCTL_VAL); +# endif +#endif + + serial_putc('c'); +} + +#endif |