A newer CPLD version on the 405EX evaluation board requires a different EBC controller setup for the CPLD register access. This patch now adds a CPLD version detection for Kilauea and code to reconfigure the EBC controller (chip select 2) for the new CPLD.
Additionally the CPLD version is printed upon bootup:
Board: Kilauea - AMCC PPC405EX Evaluation Board (CPLD rev. 0)
Signed-off-by: Stefan Roese sr@denx.de Cc: Zhang Bao Quan bqzhang@udtech.com.cn --- board/amcc/kilauea/kilauea.c | 40 +++++++++++++++++++++++++++++++++++++++- include/configs/kilauea.h | 26 ++++++++++++++++++++++---- 2 files changed, 61 insertions(+), 5 deletions(-)
diff --git a/board/amcc/kilauea/kilauea.c b/board/amcc/kilauea/kilauea.c index 5cd822a..964b2d0 100644 --- a/board/amcc/kilauea/kilauea.c +++ b/board/amcc/kilauea/kilauea.c @@ -39,6 +39,37 @@ DECLARE_GLOBAL_DATA_PTR;
extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
+static int board_cpld_version(void) +{ + u32 cpld; + + cpld = in_be32((void *)CONFIG_SYS_FPGA_FIFO_BASE); + if ((cpld & CONFIG_SYS_FPGA_MAGIC_MASK) != CONFIG_SYS_FPGA_MAGIC) { + /* + * Magic not found -> "old" CPLD revision which needs + * the "old" EBC configuration + */ + mtebc(PB2AP, EBC_BXAP_BME_ENABLED | EBC_BXAP_FWT_ENCODE(5) | + EBC_BXAP_BWT_ENCODE(0) | EBC_BXAP_BCE_DISABLE | + EBC_BXAP_BCT_2TRANS | EBC_BXAP_CSN_ENCODE(0) | + EBC_BXAP_OEN_ENCODE(0) | EBC_BXAP_WBN_ENCODE(3) | + EBC_BXAP_WBF_ENCODE(0) | EBC_BXAP_TH_ENCODE(4) | + EBC_BXAP_RE_DISABLED | EBC_BXAP_SOR_DELAYED | + EBC_BXAP_BEM_WRITEONLY | EBC_BXAP_PEN_DISABLED); + + /* + * Return 0 for "old" CPLD version + */ + return 0; + } + + /* + * Magic found -> "new" CPLD revision which needs no new + * EBC configuration + */ + return (cpld & CONFIG_SYS_FPGA_VER_MASK) >> 8; +} + /* * Board early initialization function */ @@ -209,6 +240,13 @@ int board_early_init_f (void) mtsdr(SDR0_PFC1, val);
/* + * The CPLD version detection has to be the first access to + * the CPLD, so we need to make this access this early and + * save the CPLD version for later. + */ + gd->board_type = board_cpld_version(); + + /* * Configure FPGA register with PCIe reset */ out_be32((void *)CONFIG_SYS_FPGA_BASE, 0xff570cc4); /* assert PCIe reset */ @@ -276,7 +314,7 @@ int checkboard (void) puts(", serial# "); puts(s); } - putc('\n'); + printf(" (CPLD rev. %ld)\n", gd->board_type);
return (0); } diff --git a/include/configs/kilauea.h b/include/configs/kilauea.h index 965599c..9359627 100644 --- a/include/configs/kilauea.h +++ b/include/configs/kilauea.h @@ -47,6 +47,7 @@
#define CONFIG_BOARD_EARLY_INIT_F 1 /* Call board_early_init_f */ #define CONFIG_MISC_INIT_R 1 /* Call misc_init_r */ +#define CONFIG_BOARD_TYPES #define CONFIG_BOARD_EMAC_COUNT
/*----------------------------------------------------------------------- @@ -522,9 +523,22 @@ #define CONFIG_SYS_EBC_PB1CR (CONFIG_SYS_NAND_ADDR | 0x1e000) #endif
-/* Memory Bank 2 (FPGA) initialization */ -#define CONFIG_SYS_EBC_PB2AP 0x9400C800 -#define CONFIG_SYS_EBC_PB2CR (CONFIG_SYS_FPGA_BASE | 0x18000) +/* Memory Bank 2 (FPGA) initialization */ +#define CONFIG_SYS_EBC_PB2AP (EBC_BXAP_BME_ENABLED | \ + EBC_BXAP_FWT_ENCODE(6) | \ + EBC_BXAP_BWT_ENCODE(1) | \ + EBC_BXAP_BCE_DISABLE | \ + EBC_BXAP_BCT_2TRANS | \ + EBC_BXAP_CSN_ENCODE(0) | \ + EBC_BXAP_OEN_ENCODE(0) | \ + EBC_BXAP_WBN_ENCODE(3) | \ + EBC_BXAP_WBF_ENCODE(1) | \ + EBC_BXAP_TH_ENCODE(4) | \ + EBC_BXAP_RE_DISABLED | \ + EBC_BXAP_SOR_DELAYED | \ + EBC_BXAP_BEM_WRITEONLY | \ + EBC_BXAP_PEN_DISABLED) +#define CONFIG_SYS_EBC_PB2CR (CONFIG_SYS_FPGA_BASE | 0x18000)
#define CONFIG_SYS_EBC_CFG 0x7FC00000 /* EBC0_CFG */
@@ -573,7 +587,7 @@ * Some Kilauea stuff..., mainly fpga registers */ #define CONFIG_SYS_FPGA_REG_BASE CONFIG_SYS_FPGA_BASE -#define CONFIG_SYS_FPGA_FIFO_BASE (in32(CONFIG_SYS_FPGA_BASE) | (1 << 10)) +#define CONFIG_SYS_FPGA_FIFO_BASE (CONFIG_SYS_FPGA_BASE | (1 << 10))
/* interrupt */ #define CONFIG_SYS_FPGA_SLIC0_R_DPRAM_INT 0x80000000 @@ -604,4 +618,8 @@ #define CONFIG_SYS_FPGA_USER_LED0 0x00000200 #define CONFIG_SYS_FPGA_USER_LED1 0x00000100
+#define CONFIG_SYS_FPGA_MAGIC_MASK 0xffff0000 +#define CONFIG_SYS_FPGA_MAGIC 0xabcd +#define CONFIG_SYS_FPGA_VER_MASK 0x0000ff00 + #endif /* __CONFIG_H */