[U-Boot-Users] [PATCH] ppc4xx: Maintenance patch for VOH405 boards
- add EEPROM write protection - initialize NAND GPIOs - use correct io accessors - slow down I2C clock to 100kHz - enable ext. I2C bus - cleanup
Signed-off-by: Matthias Fuchs matthias.fuchs@esd-electronics.com --- board/esd/voh405/voh405.c | 135 ++++++++++++++++++++++++++++++++++++++------ include/configs/VOH405.h | 31 ++++------- 2 files changed, 127 insertions(+), 39 deletions(-)
diff --git a/board/esd/voh405/voh405.c b/board/esd/voh405/voh405.c index 2857a0b..95625d7 100644 --- a/board/esd/voh405/voh405.c +++ b/board/esd/voh405/voh405.c @@ -22,6 +22,7 @@ */
#include <common.h> +#include <asm/io.h> #include <asm/processor.h> #include <command.h> #include <malloc.h> @@ -112,11 +113,11 @@ int misc_init_f (void)
int misc_init_r (void) { - volatile unsigned char *duart0_mcr = (unsigned char *)((ulong)DUART0_BA + 4); - volatile unsigned char *duart1_mcr = (unsigned char *)((ulong)DUART1_BA + 4); - volatile unsigned short *lcd_contrast = + unsigned char *duart0_mcr = (unsigned char *)((ulong)DUART0_BA + 4); + unsigned char *duart1_mcr = (unsigned char *)((ulong)DUART1_BA + 4); + unsigned short *lcd_contrast = (unsigned short *)((ulong)CFG_FPGA_BASE_ADDR + CFG_FPGA_CTRL + 4); - volatile unsigned short *lcd_backlight = + unsigned short *lcd_backlight = (unsigned short *)((ulong)CFG_FPGA_BASE_ADDR + CFG_FPGA_CTRL + 6); unsigned char *dst; ulong len = sizeof(fpgadata); @@ -180,25 +181,37 @@ int misc_init_r (void) /* * Reset FPGA via FPGA_INIT pin */ - out32(GPIO0_TCR, in32(GPIO0_TCR) | FPGA_INIT); /* setup FPGA_INIT as output */ - out32(GPIO0_OR, in32(GPIO0_OR) & ~FPGA_INIT); /* reset low */ + out_be32((void*)GPIO0_TCR, in_be32((void*)GPIO0_TCR) | FPGA_INIT); /* setup FPGA_INIT as output */ + out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) & ~FPGA_INIT); /* reset low */ udelay(1000); /* wait 1ms */ - out32(GPIO0_OR, in32(GPIO0_OR) | FPGA_INIT); /* reset high */ + out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) | FPGA_INIT); /* reset high */ udelay(1000); /* wait 1ms */
/* * Reset external DUARTs */ - out32(GPIO0_OR, in32(GPIO0_OR) | CFG_DUART_RST); /* set reset to high */ + out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) | CFG_DUART_RST); /* set reset to high */ udelay(10); /* wait 10us */ - out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_DUART_RST); /* set reset to low */ + out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) & ~CFG_DUART_RST); /* set reset to low */ udelay(1000); /* wait 1ms */
/* + * Set NAND-FLASH GPIO signals to default + */ + out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) & ~(CFG_NAND_CLE | CFG_NAND_ALE)); + out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) | CFG_NAND_CE); + + /* + * Setup EEPROM write protection + */ + out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) | CFG_EEPROM_WP); + out_be32((void*)GPIO0_TCR, in_be32((void*)GPIO0_TCR) | CFG_EEPROM_WP); + + /* * Enable interrupts in exar duart mcr[3] */ - *duart0_mcr = 0x08; - *duart1_mcr = 0x08; + out_8(duart0_mcr, 0x08); + out_8(duart1_mcr, 0x08);
/* * Init lcd interface and display logo @@ -240,17 +253,23 @@ int misc_init_r (void) /* * Set invert bit in small lcd controller */ - *(unsigned char *)(CFG_LCD_SMALL_REG + 2) |= 0x01; + out_8((unsigned char *)(CFG_LCD_SMALL_REG + 2), + in_8((unsigned char *)(CFG_LCD_SMALL_REG + 2)) | 0x01);
/* * Set default contrast voltage on epson vga controller */ - *lcd_contrast = 0x4646; + out_be16(lcd_contrast, 0x4646);
/* * Enable backlight */ - *lcd_backlight = 0xffff; + out_be16(lcd_backlight, 0xffff); + + /* + * Enable external I2C bus + */ + out_be32((void*)GPIO0_TCR, in_be32((void*)GPIO0_TCR) | CFG_IIC_ON);
return (0); } @@ -281,11 +300,6 @@ int checkboard (void)
putc ('\n');
- /* - * Disable sleep mode in LXT971 - */ - lxt971_no_sleep(); - return 0; }
@@ -334,3 +348,86 @@ void ide_set_reset(int on) } } #endif /* CONFIG_IDE_RESET */ + +#if defined(CONFIG_RESET_PHY_R) +void reset_phy(void) +{ +#ifdef CONFIG_LXT971_NO_SLEEP + + /* + * Disable sleep mode in LXT971 + */ + lxt971_no_sleep(); +#endif +} +#endif + +#if defined(CFG_EEPROM_WREN) +/* Input: <dev_addr> I2C address of EEPROM device to enable. + * <state> -1: deliver current state + * 0: disable write + * 1: enable write + * Returns: -1: wrong device address + * 0: dis-/en- able done + * 0/1: current state if <state> was -1. + */ +int eeprom_write_enable (unsigned dev_addr, int state) +{ + if (CFG_I2C_EEPROM_ADDR != dev_addr) { + return -1; + } else { + switch (state) { + case 1: + /* Enable write access, clear bit GPIO0. */ + out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) & ~CFG_EEPROM_WP); + state = 0; + break; + case 0: + /* Disable write access, set bit GPIO0. */ + out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) | CFG_EEPROM_WP); + state = 0; + break; + default: + /* Read current status back. */ + state = (0 == (in_be32((void*)GPIO0_OR) & CFG_EEPROM_WP)); + break; + } + } + return state; +} + +int do_eep_wren (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + int query = argc == 1; + int state = 0; + + if (query) { + /* Query write access state. */ + state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, -1); + if (state < 0) { + puts ("Query of write access state failed.\n"); + } else { + printf ("Write access for device 0x%0x is %sabled.\n", + CFG_I2C_EEPROM_ADDR, state ? "en" : "dis"); + state = 0; + } + } else { + if ('0' == argv[1][0]) { + /* Disable write access. */ + state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, 0); + } else { + /* Enable write access. */ + state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, 1); + } + if (state < 0) { + puts ("Setup of write access state failed.\n"); + } + } + + return state; +} + +U_BOOT_CMD(eepwren, 2, 0, do_eep_wren, + "eepwren - Enable / disable / query EEPROM write access\n", + NULL); +#endif /* #if defined(CFG_EEPROM_WREN) */ diff --git a/include/configs/VOH405.h b/include/configs/VOH405.h index 3a413f5..3ca928e 100644 --- a/include/configs/VOH405.h +++ b/include/configs/VOH405.h @@ -52,9 +52,13 @@
#define CFG_LOADS_BAUD_CHANGE 1 /* allow baudrate change */
+#define CONFIG_NET_MULTI 1 +#undef CONFIG_HAS_ETH1 + #define CONFIG_MII 1 /* MII PHY management */ #define CONFIG_PHY_ADDR 0 /* PHY address */ #define CONFIG_LXT971_NO_SLEEP 1 /* disable sleep mode in LXT971 */ +#define CONFIG_RESET_PHY_R 1 /* use reset_phy() to disable phy sleep mode */
#define CONFIG_PHY_CLK_FREQ EMAC_STACR_CLK_66MHZ /* 66 MHz OPB clock*/
@@ -204,8 +208,6 @@ #define CFG_IDE_MAXBUS 2 /* max. 2 IDE busses */ #define CFG_IDE_MAXDEVICE (CFG_IDE_MAXBUS*2) /* max. 2 drives per IDE bus */
-#define CONFIG_ATAPI 1 /* ATAPI for Travelstar */ - #define CFG_ATA_BASE_ADDR 0xF0100000 #define CFG_ATA_IDE0_OFFSET 0x0000 #define CFG_ATA_IDE1_OFFSET 0x0010 @@ -244,11 +246,6 @@
#define CFG_FLASH_EMPTY_INFO /* print 'E' for empty sector on flinfo */
-#if 0 /* test-only */ -#define CFG_JFFS2_FIRST_BANK 0 /* use for JFFS2 */ -#define CFG_JFFS2_NUM_BANKS 1 /* ! second bank contains U-Boot */ -#endif - /*----------------------------------------------------------------------- * Start addresses for the final memory configuration * (Set up by the startup code) @@ -281,19 +278,12 @@ * I2C EEPROM (CAT24WC16) for environment */ #define CONFIG_HARD_I2C /* I2c with hardware support */ -#define CFG_I2C_SPEED 400000 /* I2C speed and slave address */ +#define CFG_I2C_SPEED 100000 /* I2C speed and slave address */ #define CFG_I2C_SLAVE 0x7F
#define CFG_I2C_EEPROM_ADDR 0x50 /* EEPROM CAT24WC08 */ -#if 0 /* test-only */ -/* CAT24WC08/16... */ -#define CFG_I2C_EEPROM_ADDR_LEN 1 /* Bytes of address */ -/* mask of address bits that overflow into the "EEPROM chip address" */ -#define CFG_I2C_EEPROM_ADDR_OVERFLOW 0x07 -#define CFG_EEPROM_PAGE_WRITE_BITS 4 /* The Catalyst CAT24WC08 has */ - /* 16 byte page write mode using*/ - /* last 4 bits of the address */ -#else +#define CFG_EEPROM_WREN 1 + /* CAT24WC32/64... */ #define CFG_I2C_EEPROM_ADDR_LEN 2 /* Bytes of address */ /* mask of address bits that overflow into the "EEPROM chip address" */ @@ -301,7 +291,6 @@ #define CFG_EEPROM_PAGE_WRITE_BITS 5 /* The Catalyst CAT24WC32 has */ /* 32 byte page write mode using*/ /* last 5 bits of the address */ -#endif #define CFG_EEPROM_PAGE_WRITE_DELAY_MS 10 /* and takes up to 10 msec */ #define CFG_EEPROM_PAGE_WRITE_ENABLE
@@ -400,18 +389,20 @@ * GPIO0[28-29] - UART1 data signal input/output * GPIO0[30-31] - EMAC0 and EMAC1 reject packet inputs -> GPIO */ -#define CFG_GPIO0_OSRH 0x40000550 +#define CFG_GPIO0_OSRH 0x00000550 #define CFG_GPIO0_OSRL 0x00000110 #define CFG_GPIO0_ISR1H 0x00000000 #define CFG_GPIO0_ISR1L 0x15555440 #define CFG_GPIO0_TSRH 0x00000000 #define CFG_GPIO0_TSRL 0x00000000 -#define CFG_GPIO0_TCR 0xF7FE0017 +#define CFG_GPIO0_TCR 0x777E0017
#define CFG_DUART_RST (0x80000000 >> 14) #define CFG_LCD_ENDIAN (0x80000000 >> 7) +#define CFG_IIC_ON (0x80000000 >> 8) #define CFG_LCD0_RST (0x80000000 >> 30) #define CFG_LCD1_RST (0x80000000 >> 31) +#define CFG_EEPROM_WP (0x80000000 >> 0)
/* * Internal Definitions
participants (1)
-
Matthias Fuchs