diff options
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/options.c | 78 | ||||
| -rw-r--r-- | common/hwconfig.c | 86 | ||||
| -rw-r--r-- | include/hwconfig.h | 68 |
3 files changed, 154 insertions, 78 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/options.c b/arch/powerpc/cpu/mpc8xxx/ddr/options.c index c641e8506..0e7097bab 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/options.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/options.c @@ -13,6 +13,14 @@ #include "ddr.h" +/* + * Use our own stack based buffer before relocation to allow accessing longer + * hwconfig strings that might be in the environment before we've relocated. + * This is pretty fragile on both the use of stack and if the buffer is big + * enough. However we will get a warning from getenv_f for the later. + */ +#define HWCONFIG_BUFFER_SIZE 128 + /* Board-specific functions defined in each board's ddr.c */ extern void fsl_ddr_board_options(memctl_options_t *popts, dimm_params_t *pdimm, @@ -24,6 +32,15 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, unsigned int ctrl_num) { unsigned int i; + char buffer[HWCONFIG_BUFFER_SIZE]; + char *buf = NULL; + + /* + * Extract hwconfig from environment since we have not properly setup + * the environment but need it for ddr config params + */ + if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0) + buf = buffer; /* Chip select options. */ @@ -221,7 +238,7 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, * should be a subset of the requested configuration. */ #if (CONFIG_NUM_DDR_CONTROLLERS > 1) - if (hwconfig_sub("fsl_ddr", "ctlr_intlv")) { + if (hwconfig_sub_f("fsl_ddr", "ctlr_intlv", buf)) { if (pdimm[0].n_ranks == 0) { printf("There is no rank on CS0 for controller %d. Because only" " rank on CS0 and ranks chip-select interleaved with CS0" @@ -234,19 +251,25 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, * test null first. if CONFIG_HWCONFIG is not defined * hwconfig_arg_cmp returns non-zero */ - if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "null")) { + if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv", + "null", buf)) { popts->memctl_interleaving = 0; debug("memory controller interleaving disabled.\n"); - } else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "cacheline")) + } else if (hwconfig_subarg_cmp_f("fsl_ddr", + "ctlr_intlv", + "cacheline", buf)) popts->memctl_interleaving_mode = FSL_DDR_CACHE_LINE_INTERLEAVING; - else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "page")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv", + "page", buf)) popts->memctl_interleaving_mode = FSL_DDR_PAGE_INTERLEAVING; - else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "bank")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv", + "bank", buf)) popts->memctl_interleaving_mode = FSL_DDR_BANK_INTERLEAVING; - else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "superbank")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv", + "superbank", buf)) popts->memctl_interleaving_mode = FSL_DDR_SUPERBANK_INTERLEAVING; else { @@ -256,19 +279,24 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, } } #endif - if ((hwconfig_sub("fsl_ddr", "bank_intlv")) && + if ((hwconfig_sub_f("fsl_ddr", "bank_intlv", buf)) && (CONFIG_CHIP_SELECTS_PER_CTRL > 1)) { /* test null first. if CONFIG_HWCONFIG is not defined, - * hwconfig_arg_cmp returns non-zero */ - if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "null")) + * hwconfig_subarg_cmp_f returns non-zero */ + if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "null", buf)) debug("bank interleaving disabled.\n"); - else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs0_cs1")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "cs0_cs1", buf)) popts->ba_intlv_ctl = FSL_DDR_CS0_CS1; - else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs2_cs3")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "cs2_cs3", buf)) popts->ba_intlv_ctl = FSL_DDR_CS2_CS3; - else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs0_cs1_and_cs2_cs3")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "cs0_cs1_and_cs2_cs3", buf)) popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_AND_CS2_CS3; - else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs0_cs1_cs2_cs3")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "cs0_cs1_cs2_cs3", buf)) popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_CS2_CS3; else printf("hwconfig has unrecognized parameter for bank_intlv.\n"); @@ -342,10 +370,11 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, } } - if (hwconfig_sub("fsl_ddr", "addr_hash")) { - if (hwconfig_subarg_cmp("fsl_ddr", "addr_hash", "null")) + if (hwconfig_sub_f("fsl_ddr", "addr_hash", buf)) { + if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash", "null", buf)) popts->addr_hash = 0; - else if (hwconfig_subarg_cmp("fsl_ddr", "addr_hash", "true")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash", + "true", buf)) popts->addr_hash = 1; } @@ -393,11 +422,22 @@ int fsl_use_spd(void) int use_spd = 0; #ifdef CONFIG_DDR_SPD + char buffer[HWCONFIG_BUFFER_SIZE]; + char *buf = NULL; + + /* + * Extract hwconfig from environment since we have not properly setup + * the environment but need it for ddr config params + */ + if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0) + buf = buffer; + /* if hwconfig is not enabled, or "sdram" is not defined, use spd */ - if (hwconfig_sub("fsl_ddr", "sdram")) { - if (hwconfig_subarg_cmp("fsl_ddr", "sdram", "spd")) + if (hwconfig_sub_f("fsl_ddr", "sdram", buf)) { + if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram", "spd", buf)) use_spd = 1; - else if (hwconfig_subarg_cmp("fsl_ddr", "sdram", "fixed")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram", + "fixed", buf)) use_spd = 0; else use_spd = 1; diff --git a/common/hwconfig.c b/common/hwconfig.c index 193863a97..515074808 100644 --- a/common/hwconfig.c +++ b/common/hwconfig.c @@ -2,6 +2,7 @@ * An inteface for configuring a hardware via u-boot environment. * * Copyright (c) 2009 MontaVista Software, Inc. + * Copyright 2011 Freescale Semiconductor, Inc. * * Author: Anton Vorontsov <avorontsov@ru.mvista.com> * @@ -71,25 +72,19 @@ next: const char cpu_hwconfig[] __attribute__((weak)) = ""; const char board_hwconfig[] __attribute__((weak)) = ""; -#define HWCONFIG_PRE_RELOC_BUF_SIZE 128 - -static const char *__hwconfig(const char *opt, size_t *arglen) +static const char *__hwconfig(const char *opt, size_t *arglen, + const char *env_hwconfig) { - const char *env_hwconfig = NULL, *ret; - char buf[HWCONFIG_PRE_RELOC_BUF_SIZE]; + const char *ret; - if (gd->flags & GD_FLG_ENV_READY) { + /* if we are passed a buffer use it, otherwise try the environment */ + if (!env_hwconfig) { + if (!(gd->flags & GD_FLG_ENV_READY)) { + printf("WARNING: Calling __hwconfig without a buffer " + "and before environment is ready\n"); + return NULL; + } env_hwconfig = getenv("hwconfig"); - } else { - /* - * Use our own on stack based buffer before relocation to allow - * accessing longer hwconfig strings that might be in the - * environment before we've relocated. This is pretty fragile - * on both the use of stack and if the buffer is big enough. - * However we will get a warning from getenv_f for the later. - */ - if ((getenv_f("hwconfig", buf, sizeof(buf))) > 0) - env_hwconfig = buf; } if (env_hwconfig) { @@ -109,8 +104,9 @@ static const char *__hwconfig(const char *opt, size_t *arglen) } /* - * hwconfig - query if a particular hwconfig option is specified + * hwconfig_f - query if a particular hwconfig option is specified * @opt: a string representing an option + * @buf: if non-NULL use this buffer to parse, otherwise try env * * This call can be used to find out whether U-Boot should configure * a particular hardware option. @@ -127,34 +123,36 @@ static const char *__hwconfig(const char *opt, size_t *arglen) * that the board file only calls things that are actually used, so * hwconfig() will always return true result. */ -int hwconfig(const char *opt) +int hwconfig_f(const char *opt, char *buf) { - return !!__hwconfig(opt, NULL); + return !!__hwconfig(opt, NULL, buf); } /* - * hwconfig_arg - get hwconfig option's argument + * hwconfig_arg_f - get hwconfig option's argument * @opt: a string representing an option * @arglen: a pointer to an allocated size_t variable + * @buf: if non-NULL use this buffer to parse, otherwise try env * - * Unlike hwconfig() function, this function returns a pointer to the + * Unlike hwconfig_f() function, this function returns a pointer to the * start of the hwconfig arguments, if option is not found or it has * no specified arguments, the function returns NULL pointer. * * If CONFIG_HWCONFIG is undefined, the function returns "", and * arglen is set to 0. */ -const char *hwconfig_arg(const char *opt, size_t *arglen) +const char *hwconfig_arg_f(const char *opt, size_t *arglen, char *buf) { - return __hwconfig(opt, arglen); + return __hwconfig(opt, arglen, buf); } /* - * hwconfig_arg_cmp - compare hwconfig option's argument + * hwconfig_arg_cmp_f - compare hwconfig option's argument * @opt: a string representing an option * @arg: a string for comparing an option's argument + * @buf: if non-NULL use this buffer to parse, otherwise try env * - * This call is similar to hwconfig_arg, but instead of returning + * This call is similar to hwconfig_arg_f, but instead of returning * hwconfig argument and its length, it is comparing it to @arg. * * Returns non-zero value if @arg matches, 0 otherwise. @@ -162,12 +160,12 @@ const char *hwconfig_arg(const char *opt, size_t *arglen) * If CONFIG_HWCONFIG is undefined, the function returns a non-zero * value, i.e. the argument matches. */ -int hwconfig_arg_cmp(const char *opt, const char *arg) +int hwconfig_arg_cmp_f(const char *opt, const char *arg, char *buf) { const char *argstr; size_t arglen; - argstr = hwconfig_arg(opt, &arglen); + argstr = hwconfig_arg_f(opt, &arglen, buf); if (!argstr || arglen != strlen(arg)) return 0; @@ -175,63 +173,67 @@ int hwconfig_arg_cmp(const char *opt, const char *arg) } /* - * hwconfig_sub - query if a particular hwconfig sub-option is specified + * hwconfig_sub_f - query if a particular hwconfig sub-option is specified * @opt: a string representing an option * @subopt: a string representing a sub-option + * @buf: if non-NULL use this buffer to parse, otherwise try env * - * This call is similar to hwconfig(), except that it takes additional + * This call is similar to hwconfig_f(), except that it takes additional * argument @subopt. In this example: * "dr_usb:mode=peripheral" * "dr_usb" is an option, "mode" is a sub-option, and "peripheral" is its * argument. */ -int hwconfig_sub(const char *opt, const char *subopt) +int hwconfig_sub_f(const char *opt, const char *subopt, char *buf) { size_t arglen; const char *arg; - arg = __hwconfig(opt, &arglen); + arg = __hwconfig(opt, &arglen, buf); if (!arg) return 0; return !!hwconfig_parse(arg, arglen, subopt, ",;", '=', NULL); } /* - * hwconfig_subarg - get hwconfig sub-option's argument + * hwconfig_subarg_f - get hwconfig sub-option's argument * @opt: a string representing an option * @subopt: a string representing a sub-option * @subarglen: a pointer to an allocated size_t variable + * @buf: if non-NULL use this buffer to parse, otherwise try env * - * This call is similar to hwconfig_arg(), except that it takes an additional - * argument @subopt, and so works with sub-options. + * This call is similar to hwconfig_arg_f(), except that it takes an + * additional argument @subopt, and so works with sub-options. */ -const char *hwconfig_subarg(const char *opt, const char *subopt, - size_t *subarglen) +const char *hwconfig_subarg_f(const char *opt, const char *subopt, + size_t *subarglen, char *buf) { size_t arglen; const char *arg; - arg = __hwconfig(opt, &arglen); + arg = __hwconfig(opt, &arglen, buf); if (!arg) return NULL; return hwconfig_parse(arg, arglen, subopt, ",;", '=', subarglen); } /* - * hwconfig_arg_cmp - compare hwconfig sub-option's argument + * hwconfig_arg_cmp_f - compare hwconfig sub-option's argument * @opt: a string representing an option * @subopt: a string representing a sub-option * @subarg: a string for comparing an sub-option's argument + * @buf: if non-NULL use this buffer to parse, otherwise try env * - * This call is similar to hwconfig_arg_cmp, except that it takes an additional - * argument @subopt, and so works with sub-options. + * This call is similar to hwconfig_arg_cmp_f, except that it takes an + * additional argument @subopt, and so works with sub-options. */ -int hwconfig_subarg_cmp(const char *opt, const char *subopt, const char *subarg) +int hwconfig_subarg_cmp_f(const char *opt, const char *subopt, + const char *subarg, char *buf) { const char *argstr; size_t arglen; - argstr = hwconfig_subarg(opt, subopt, &arglen); + argstr = hwconfig_subarg_f(opt, subopt, &arglen, buf); if (!argstr || arglen != strlen(subarg)) return 0; diff --git a/include/hwconfig.h b/include/hwconfig.h index d517f782f..a037ed885 100644 --- a/include/hwconfig.h +++ b/include/hwconfig.h @@ -2,6 +2,7 @@ * An inteface for configuring a hardware via u-boot environment. * * Copyright (c) 2009 MontaVista Software, Inc. + * Copyright 2011 Freescale Semiconductor, Inc. * * Author: Anton Vorontsov <avorontsov@ru.mvista.com> * @@ -19,51 +20,84 @@ #ifdef CONFIG_HWCONFIG -extern int hwconfig(const char *opt); -extern const char *hwconfig_arg(const char *opt, size_t *arglen); -extern int hwconfig_arg_cmp(const char *opt, const char *arg); -extern int hwconfig_sub(const char *opt, const char *subopt); -extern const char *hwconfig_subarg(const char *opt, const char *subopt, - size_t *subarglen); -extern int hwconfig_subarg_cmp(const char *opt, const char *subopt, - const char *subarg); - +extern int hwconfig_f(const char *opt, char *buf); +extern const char *hwconfig_arg_f(const char *opt, size_t *arglen, char *buf); +extern int hwconfig_arg_cmp_f(const char *opt, const char *arg, char *buf); +extern int hwconfig_sub_f(const char *opt, const char *subopt, char *buf); +extern const char *hwconfig_subarg_f(const char *opt, const char *subopt, + size_t *subarglen, char *buf); +extern int hwconfig_subarg_cmp_f(const char *opt, const char *subopt, + const char *subarg, char *buf); #else -static inline int hwconfig(const char *opt) +static inline int hwconfig_f(const char *opt, char *buf) { return -ENOSYS; } -static inline const char *hwconfig_arg(const char *opt, size_t *arglen) +static inline const char *hwconfig_arg_f(const char *opt, size_t *arglen, + char *buf) { *arglen = 0; return ""; } -static inline int hwconfig_arg_cmp(const char *opt, const char *arg) +static inline int hwconfig_arg_cmp_f(const char *opt, const char *arg, + char *buf) { return -ENOSYS; } -static inline int hwconfig_sub(const char *opt, const char *subopt) +static inline int hwconfig_sub_f(const char *opt, const char *subopt, char *buf) { return -ENOSYS; } -static inline const char *hwconfig_subarg(const char *opt, const char *subopt, - size_t *subarglen) +static inline const char *hwconfig_subarg_f(const char *opt, const char *subopt, + size_t *subarglen, char *buf) { *subarglen = 0; return ""; } -static inline int hwconfig_subarg_cmp(const char *opt, const char *subopt, - const char *subarg) +static inline int hwconfig_subarg_cmp_f(const char *opt, const char *subopt, + const char *subarg, char *buf) { return -ENOSYS; } #endif /* CONFIG_HWCONFIG */ +static inline int hwconfig(const char *opt) +{ + return hwconfig_f(opt, NULL); +} + +static inline const char *hwconfig_arg(const char *opt, size_t *arglen) +{ + return hwconfig_arg_f(opt, arglen, NULL); +} + +static inline int hwconfig_arg_cmp(const char *opt, const char *arg) +{ + return hwconfig_arg_cmp_f(opt, arg, NULL); +} + +static inline int hwconfig_sub(const char *opt, const char *subopt) +{ + return hwconfig_sub_f(opt, subopt, NULL); +} + +static inline const char *hwconfig_subarg(const char *opt, const char *subopt, + size_t *subarglen) +{ + return hwconfig_subarg_f(opt, subopt, subarglen, NULL); +} + +static inline int hwconfig_subarg_cmp(const char *opt, const char *subopt, + const char *subarg) +{ + return hwconfig_subarg_cmp_f(opt, subopt, subarg, NULL); +} + #endif /* _HWCONFIG_H */ |