Commit 580ca3c2 authored by Stefan Roese's avatar Stefan Roese Committed by Wolfgang Denk
Browse files

ppc4xx: Kilauea: Add CPLD version detection and EBC reconfiguration



A newer CPLD version on the 405EX evaluation board requires a different
EBC controller setup for the CPLD register access. This patch adds a CPLD
version detection for Kilauea and code to reconfigure the EBC controller
(chip select 2) for the old CPLD if no new version is found.

Additionally the CPLD version is printed upon bootup:

Board: Kilauea - AMCC PPC405EX Evaluation Board (CPLD rev. 0)
Signed-off-by: Stefan Roese's avatarStefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk's avatarWolfgang Denk <wd@denx.de>
Cc: Zhang Bao Quan <bqzhang@udtech.com.cn>
parent eb20392c
......@@ -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
*/
......@@ -208,6 +239,13 @@ int board_early_init_f (void)
val = SDR0_PFC1_USBEN | SDR0_PFC1_USBBIGEN | SDR0_PFC1_GPT_FREQ;
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
*/
......@@ -276,7 +314,7 @@ int checkboard (void)
puts(", serial# ");
puts(s);
}
putc('\n');
printf(" (CPLD rev. %ld)\n", gd->board_type);
return (0);
}
......
......@@ -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
/*-----------------------------------------------------------------------
......@@ -523,7 +524,20 @@
#endif
/* Memory Bank 2 (FPGA) initialization */
#define CONFIG_SYS_EBC_PB2AP 0x9400C800
#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 0xabcd0000
#define CONFIG_SYS_FPGA_VER_MASK 0x0000ff00
#endif /* __CONFIG_H */
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