This patch contains updates for changes for the Korat PPC440EPx board.
These changes include:
(1) Support for "permanent" and "upgradable" copies of U-Boot, as
described in the new "doc/README.korat" file;
(2) a new memory map for the registers in the board's CPLD;
(3) a revised format for manufacturer's data in serial EEPROM; and
(4) changes to track updates to U-Boot for the Sequoia board.
Signed-off-by: Larry Johnson <lrj@acm.org>
# Korat (PPC440EPx) board
#
-TEXT_BASE = 0xFFFA0000
-
PLATFORM_CPPFLAGS += -DCONFIG_440=1
ifeq ($(debug),1)
PLATFORM_CPPFLAGS += -DDEBUG
endif
+ifeq ($(emul),1)
+PLATFORM_CPPFLAGS += -fno-schedule-insns -fno-schedule-insns2
+endif
+
ifeq ($(dbcr),1)
-PLATFORM_CPPFLAGS += -DCFG_INIT_DBCR=0x8cff0000
+PLATFORM_CPPFLAGS += -DCFG_INIT_DBCR=0x8CFF0000
+endif
+
+ifeq ($(perm),1)
+PLATFORM_CPPFLAGS += -DCONFIG_KORAT_PERMANENT
+TEXT_BASE = 0xFFFA0000
+else
+TEXT_BASE = 0xF7F60000
+LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-F7FC.lds
endif
* BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
* speed up boot process. It is patched after relocation to enable SA_I
*/
- tlbentry( CFG_BOOT_BASE_ADDR, SZ_256M, CFG_BOOT_BASE_ADDR, 1, AC_R|AC_W|AC_X|SA_G )
+ tlbentry( 0xF0000000, SZ_256M, 0xF0000000, 1, AC_R|AC_W|AC_X|SA_G )
/*
* TLB entries for SDRAM are not needed on this platform. They are
#ifdef CFG_INIT_RAM_DCACHE
/* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
- tlbentry( CFG_INIT_RAM_ADDR, SZ_64K, CFG_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G )
+ tlbentry( CFG_INIT_RAM_ADDR, SZ_64K, CFG_INIT_RAM_ADDR, 0,
+ AC_R|AC_W|AC_X|SA_G )
#endif
/* TLB-entry for PCI Memory */
- tlbentry( CFG_PCI_MEMBASE, SZ_256M, CFG_PCI_MEMBASE, 1, AC_R|AC_W|SA_G|SA_I )
- tlbentry( CFG_PCI_MEMBASE1, SZ_256M, CFG_PCI_MEMBASE1, 1, AC_R|AC_W|SA_G|SA_I )
- tlbentry( CFG_PCI_MEMBASE2, SZ_256M, CFG_PCI_MEMBASE2, 1, AC_R|AC_W|SA_G|SA_I )
- tlbentry( CFG_PCI_MEMBASE3, SZ_256M, CFG_PCI_MEMBASE3, 1, AC_R|AC_W|SA_G|SA_I )
+ tlbentry( CFG_PCI_MEMBASE + 0x00000000, SZ_256M,
+ CFG_PCI_MEMBASE + 0x00000000, 1, AC_R|AC_W|SA_G|SA_I )
+
+ tlbentry( CFG_PCI_MEMBASE + 0x10000000, SZ_256M,
+ CFG_PCI_MEMBASE + 0x10000000, 1, AC_R|AC_W|SA_G|SA_I )
+
+ tlbentry( CFG_PCI_MEMBASE + 0x20000000, SZ_256M,
+ CFG_PCI_MEMBASE + 0x20000000, 1, AC_R|AC_W|SA_G|SA_I )
+
+ tlbentry( CFG_PCI_MEMBASE + 0x30000000, SZ_256M,
+ CFG_PCI_MEMBASE + 0x30000000, 1, AC_R|AC_W|SA_G|SA_I )
/* TLB-entry for EBC */
tlbentry( CFG_CPLD_BASE, SZ_1K, CFG_CPLD_BASE, 1, AC_R|AC_W|SA_G|SA_I )
/* TLB-entry for Internal Registers & OCM */
/* I wonder why this must be executable -- lrj@acm.org 2007-10-08 */
- tlbentry( 0xE0000000, SZ_16M, 0xE0000000, 0, AC_R|AC_W|AC_X|SA_I )
+ tlbentry( 0xE0000000, SZ_16M, 0xE0000000, 0, AC_R|AC_W|AC_X|SA_I )
/*TLB-entry PCI registers*/
- tlbentry( 0xEEC00000, SZ_1K, 0xEEC00000, 1, AC_R|AC_W|SA_G|SA_I )
+ tlbentry( 0xEEC00000, SZ_1K, 0xEEC00000, 1, AC_R|AC_W|SA_G|SA_I )
/* TLB-entry for peripherals */
tlbentry( 0xEF000000, SZ_16M, 0xEF000000, 1, AC_R|AC_W|SA_G|SA_I)
tlbentry(0xE8000000, SZ_64K, 0xE8000000, 1, AC_R|AC_W|SA_G|SA_I)
tlbtab_end
+
+#if defined(CONFIG_KORAT_PERMANENT)
+ .globl korat_branch_absolute
+korat_branch_absolute:
+ mtlr r3
+ blr
+#endif
* (C) Copyright 2007-2008
* Larry Johnson, lrj@acm.org
*
- * (C) Copyright 2006-2008
+ * (C) Copyright 2006-2007
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
* (C) Copyright 2006
* Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
- * Alain Saurel, AMCC/IBM, alain.saurel@fr.ibm.com
+ * Alain Saurel, AMCC/IBM, alain.saurel@fr.ibm.com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
ulong flash_get_size(ulong base, int banknum);
+#if defined(CONFIG_KORAT_PERMANENT)
+void korat_buzzer(int const on)
+{
+ if (on) {
+ out_8((u8 *) CFG_CPLD_BASE + 0x05,
+ in_8((u8 *) CFG_CPLD_BASE + 0x05) | 0x80);
+ } else {
+ out_8((u8 *) CFG_CPLD_BASE + 0x05,
+ in_8((u8 *) CFG_CPLD_BASE + 0x05) & ~0x80);
+ }
+}
+#endif
+
int board_early_init_f(void)
{
- u32 sdr0_pfc1, sdr0_pfc2;
- u32 reg;
+ uint32_t sdr0_pfc1, sdr0_pfc2;
+ uint32_t reg;
int eth;
+#if defined(CONFIG_KORAT_PERMANENT)
+ unsigned mscount;
+
+ extern void korat_branch_absolute(uint32_t addr);
+
+ for (mscount = 0; mscount < CFG_KORAT_MAN_RESET_MS; ++mscount) {
+ udelay(1000);
+ if (gpio_read_in_bit(CFG_GPIO_RESET_PRESSED_)) {
+ /* This call does not return. */
+ korat_branch_absolute(
+ CFG_FLASH1_TOP - 2 * CFG_ENV_SECT_SIZE - 4);
+ }
+ }
+ korat_buzzer(1);
+ while (!gpio_read_in_bit(CFG_GPIO_RESET_PRESSED_))
+ udelay(1000);
+
+ korat_buzzer(0);
+#endif
+
mtdcr(ebccfga, xbcfg);
mtdcr(ebccfgd, 0xb8400000);
mtdcr(uic2vr, 0x00000000); /* int31 highest, base=0x000 */
mtdcr(uic2sr, 0xffffffff); /* clear all */
- /* take sim card reader and CF controller out of reset */
- out_8((u8 *) CFG_CPLD_BASE + 0x04, 0x80);
+ /*
+ * Take sim card reader and CF controller out of reset. Also enable PHY
+ * auto-detect until board-specific PHY resets are available.
+ */
+ out_8((u8 *) CFG_CPLD_BASE + 0x02, 0xC0);
/* Configure the two Ethernet PHYs. For each PHY, configure for fiber
* if the SFP module is present, and for copper if it is not present.
if (gpio_read_in_bit(CFG_GPIO_SFP0_PRESENT_ + eth)) {
/* SFP module not present: configure PHY for copper. */
/* Set PHY to autonegotate 10 MB, 100MB, or 1 GB */
- out_8((u8 *) CFG_CPLD_BASE + 0x06,
- in_8((u8 *) CFG_CPLD_BASE + 0x06) |
+ out_8((u8 *) CFG_CPLD_BASE + 0x03,
+ in_8((u8 *) CFG_CPLD_BASE + 0x03) |
0x06 << (4 * eth));
} else {
/* SFP module present: configure PHY for fiber and
gpio_write_bit(CFG_GPIO_PHY0_EN, 1);
gpio_write_bit(CFG_GPIO_PHY1_EN, 1);
- /* select Ethernet pins */
+ /* Wait 1 ms, then enable Fiber signal detect to PHYs. */
+ udelay(1000);
+ out_8((u8 *) CFG_CPLD_BASE + 0x03,
+ in_8((u8 *) CFG_CPLD_BASE + 0x03) | 0x88);
+
+ /* select Ethernet (and optionally IIC1) pins */
mfsdr(SDR0_PFC1, sdr0_pfc1);
sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_SELECT_MASK) |
SDR0_PFC1_SELECT_CONFIG_4;
+#ifdef CONFIG_I2C_MULTI_BUS
+ sdr0_pfc1 |= ((sdr0_pfc1 & ~SDR0_PFC1_SIS_MASK) | SDR0_PFC1_SIS_IIC1_SEL);
+#endif
mfsdr(SDR0_PFC2, sdr0_pfc2);
sdr0_pfc2 = (sdr0_pfc2 & ~SDR0_PFC2_SELECT_MASK) |
SDR0_PFC2_SELECT_CONFIG_4;
return 0;
}
+/*
+ * The boot flash on CS0 normally has its write-enable pin disabled, and so will
+ * not respond to CFI commands. This routine therefore fills in the flash
+ * information for the boot flash. (The flash at CS1 operates normally.)
+ */
+ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t * info)
+{
+ uint32_t addr;
+ int i;
+
+ if (1 != banknum)
+ return 0;
+
+ info->size = CFG_FLASH0_SIZE;
+ info->sector_count = CFG_FLASH0_SIZE / 0x20000;
+ info->flash_id = 0x01000000;
+ info->portwidth = 2;
+ info->chipwidth = 2;
+ info->buffer_size = 32;
+ info->erase_blk_tout = 16384;
+ info->write_tout = 2;
+ info->buffer_write_tout = 5;
+ info->vendor = 2;
+ info->cmd_reset = 0x00F0;
+ info->interface = 2;
+ info->legacy_unlock = 0;
+ info->manufacturer_id = 1;
+ info->device_id = 0x007E;
+
+#if CFG_FLASH0_SIZE == 0x01000000
+ info->device_id2 = 0x2101;
+#elif CFG_FLASH0_SIZE == 0x04000000
+ info->device_id2 = 0x2301;
+#else
+#error Unable to set device_id2 for current CFG_FLASH0_SIZE
+#endif
+
+ info->ext_addr = 0x0040;
+ info->cfi_version = 0x3133;
+ info->cfi_offset = 0x0055;
+ info->addr_unlock1 = 0x00000555;
+ info->addr_unlock2 = 0x000002AA;
+ info->name = "CFI conformant";
+ for (i = 0, addr = -info->size;
+ i < info->sector_count;
+ ++i, addr += 0x20000) {
+ info->start[i] = addr;
+ info->protect[i] = 0x00;
+ }
+ return 1;
+}
+
static int man_data_read(unsigned int addr)
{
/*
* If the environmental variable "serial#" is not set, try to set it
* from the manufacturer's information serial EEPROM.
*/
- char s[MAN_SERIAL_NO_LENGTH + 1];
+ char s[MAN_INFO_LENGTH + MAN_MAC_ADDR_LENGTH + 2];
+
+ if (getenv("serial#"))
+ return;
+
+ if (!man_data_read_field(s, MAN_INFO_FIELD, MAN_INFO_LENGTH))
+ return;
+
+ s[MAN_INFO_LENGTH] = '-';
+ if (!man_data_read_field(s + MAN_INFO_LENGTH + 1, MAN_MAC_ADDR_FIELD,
+ MAN_MAC_ADDR_LENGTH))
+ return;
- if (0 == getenv("serial#") &&
- 0 != man_data_read_field(s, MAN_SERIAL_NO_FIELD,
- MAN_SERIAL_NO_LENGTH))
- setenv("serial#", s);
+ setenv("serial#", s);
}
static void set_mac_addresses(void)
* set, try to set them from the manufacturer's information serial
* EEPROM.
*/
- char s[MAN_MAC_ADDR_LENGTH + 1];
+
+#if MAN_MAC_ADDR_LENGTH % 2 != 0
+#error MAN_MAC_ADDR_LENGTH must be an even number
+#endif
+
+ char s[(3 * MAN_MAC_ADDR_LENGTH) / 2];
+ char *src;
+ char *dst;
if (0 != getenv("ethaddr") && 0 != getenv("eth1addr"))
return;
- if (0 == man_data_read_field(s, MAN_MAC_ADDR_FIELD,
- MAN_MAC_ADDR_LENGTH))
+ if (0 == man_data_read_field(s + (MAN_MAC_ADDR_LENGTH / 2) - 1,
+ MAN_MAC_ADDR_FIELD, MAN_MAC_ADDR_LENGTH))
return;
+ for (src = s + (MAN_MAC_ADDR_LENGTH / 2) - 1, dst = s; src != dst;) {
+ *dst++ = *src++;
+ *dst++ = *src++;
+ *dst++ = ':';
+ }
if (0 == getenv("ethaddr"))
setenv("ethaddr", s);
if (0 == getenv("eth1addr")) {
- ++s[MAN_MAC_ADDR_LENGTH - 1];
+ ++s[((3 * MAN_MAC_ADDR_LENGTH) / 2) - 2];
setenv("eth1addr", s);
}
}
int misc_init_r(void)
{
- uint pbcr;
- int size_val = 0;
- u32 reg;
+ uint32_t pbcr;
+ int size_val;
+ uint32_t reg;
unsigned long usb2d0cr = 0;
unsigned long usb2phy0cr, usb2h0cr = 0;
unsigned long sdr0_pfc1;
- char *act = getenv("usbact");
-
- /* Re-do flash sizing to get full correct info */
+ uint32_t const flash1_size = gd->bd->bi_flashsize - CFG_FLASH0_SIZE;
+ char const *const act = getenv("usbact");
- /* adjust flash start and offset */
- gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
+ /*
+ * Re-do FLASH1 sizing and adjust flash start and offset.
+ */
+ gd->bd->bi_flashstart = CFG_FLASH1_TOP - flash1_size;
gd->bd->bi_flashoffset = 0;
- mtdcr(ebccfga, pb0cr);
+ mtdcr(ebccfga, pb1cr);
pbcr = mfdcr(ebccfgd);
- size_val = ffs(gd->bd->bi_flashsize) - 21;
+ size_val = ffs(flash1_size) - 21;
pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
- mtdcr(ebccfga, pb0cr);
+ mtdcr(ebccfga, pb1cr);
mtdcr(ebccfgd, pbcr);
/*
*/
flash_get_size(gd->bd->bi_flashstart, 0);
- /* Monitor protection ON by default */
- (void)flash_protect(FLAG_PROTECT_SET, -CFG_MONITOR_LEN, 0xffffffff,
- &flash_info[0]);
+ /*
+ * Re-do FLASH1 sizing and adjust flash offset to reserve space for
+ * environment
+ */
+ gd->bd->bi_flashoffset =
+ CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - CFG_FLASH1_ADDR;
+ mtdcr(ebccfga, pb1cr);
+ pbcr = mfdcr(ebccfgd);
+ size_val = ffs(gd->bd->bi_flashsize - CFG_FLASH0_SIZE) - 21;
+ pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
+ mtdcr(ebccfga, pb1cr);
+ mtdcr(ebccfgd, pbcr);
+
+ /* Monitor protection ON by default */
+#if defined(CONFIG_KORAT_PERMANENT)
+ (void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
+ CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
+ flash_info + 1);
+#else
+ (void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
+ CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
+ flash_info);
+#endif
/* Env protection ON by default */
+ (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
+ flash_info);
(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
- CFG_ENV_ADDR_REDUND + 2 * CFG_ENV_SECT_SIZE - 1,
- &flash_info[0]);
+ CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
+ flash_info);
/*
* USB suff...
set_serial_number();
set_mac_addresses();
+ gpio_write_bit(CFG_GPIO_ATMEGA_RESET_, 1);
+
return 0;
}
u8 const rev = in_8((u8 *) CFG_CPLD_BASE + 0);
printf("Board: Korat, Rev. %X", rev);
- if (s != NULL)
+ if (s)
printf(", serial# %s", s);
- printf(", Ethernet PHY 0: ");
+ printf(".\n Ethernet PHY 0: ");
if (gpio_read_out_bit(CFG_GPIO_PHY0_FIBER_SEL))
printf("fiber");
else
printf("copper");
printf(".\n");
- return (0);
+#if defined(CONFIG_KORAT_PERMANENT)
+ printf(" Executing permanent copy of U-Boot.\n");
+#endif
+ return 0;
}
#if defined(CFG_DRAM_TEST)
/*
* PowerPC440EPX PCI Master configuration.
* Map one 1Gig range of PLB/processor addresses to PCI memory space.
- * PLB address 0xA0000000-0xDFFFFFFF
- * ==> PCI address 0xA0000000-0xDFFFFFFF
+ * PLB address 0x80000000-0xBFFFFFFF
+ * ==> PCI address 0x80000000-0xBFFFFFFF
* Use byte reversed out routines to handle endianess.
* Make this region non-prefetchable.
*/
out32r(PCIX0_PMM0MA, 0x00000000); /* PMM0 Mask/Attribute */
/* - disabled b4 setting */
out32r(PCIX0_PMM0LA, CFG_PCI_MEMBASE); /* PMM0 Local Address */
- out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE); /* PMM0 PCI Low Address */
+ out32r(PCIX0_PMM0PCILA,
+ CFG_PCI_MEMBASE); /* PMM0 PCI Low Address */
out32r(PCIX0_PMM0PCIHA, 0x00000000); /* PMM0 PCI High Address */
out32r(PCIX0_PMM0MA, 0xE0000001); /* 512M + No prefetching, */
/* and enable region */
out32r(PCIX0_PMM1MA, 0x00000000); /* PMM0 Mask/Attribute */
/* - disabled b4 setting */
- out32r(PCIX0_PMM1LA, CFG_PCI_MEMBASE2); /* PMM0 Local Address */
- out32r(PCIX0_PMM1PCILA, CFG_PCI_MEMBASE2); /* PMM0 PCI Low Address */
+ out32r(PCIX0_PMM1LA,
+ CFG_PCI_MEMBASE + 0x20000000); /* PMM0 Local Address */
+ out32r(PCIX0_PMM1PCILA,
+ CFG_PCI_MEMBASE + 0x20000000); /* PMM0 PCI Low Address */
out32r(PCIX0_PMM1PCIHA, 0x00000000); /* PMM0 PCI High Address */
out32r(PCIX0_PMM1MA, 0xE0000001); /* 512M + No prefetching, */
/* and enable region */
--- /dev/null
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+OUTPUT_ARCH(powerpc)
+SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib);
+/* Do we need any of these for elf?
+ __DYNAMIC = 0; */
+SECTIONS
+{
+ .resetvec 0xF7FBFFFC :
+ {
+ *(.resetvec)
+ } = 0xffff
+
+ .bootpg 0xF7FBF000 :
+ {
+ cpu/ppc4xx/start.o (.bootpg)
+ } = 0xffff
+
+ /* Read-only sections, merged into text segment: */
+ . = + SIZEOF_HEADERS;
+ .interp : { *(.interp) }
+ .hash : { *(.hash) }
+ .dynsym : { *(.dynsym) }
+ .dynstr : { *(.dynstr) }
+ .rel.text : { *(.rel.text) }
+ .rela.text : { *(.rela.text) }
+ .rel.data : { *(.rel.data) }
+ .rela.data : { *(.rela.data) }
+ .rel.rodata : { *(.rel.rodata) }
+ .rela.rodata : { *(.rela.rodata) }
+ .rel.got : { *(.rel.got) }
+ .rela.got : { *(.rela.got) }
+ .rel.ctors : { *(.rel.ctors) }
+ .rela.ctors : { *(.rela.ctors) }
+ .rel.dtors : { *(.rel.dtors) }
+ .rela.dtors : { *(.rela.dtors) }
+ .rel.bss : { *(.rel.bss) }
+ .rela.bss : { *(.rela.bss) }
+ .rel.plt : { *(.rel.plt) }
+ .rela.plt : { *(.rela.plt) }
+ .init : { *(.init) }
+ .plt : { *(.plt) }
+ .text :
+ {
+ /* WARNING - the following is hand-optimized to fit within */
+ /* the sector layout of our flash chips! XXX FIXME XXX */
+
+ cpu/ppc4xx/start.o (.text)
+
+ *(.text)
+ *(.fixup)
+ *(.got1)
+ }
+ _etext = .;
+ PROVIDE (etext = .);
+ .rodata :
+ {
+ *(.rodata)
+ *(.rodata1)
+ *(.rodata.str1.4)
+ }
+ .fini : { *(.fini) } =0
+ .ctors : { *(.ctors) }
+ .dtors : { *(.dtors) }
+
+ /* Read-write section, merged into data segment: */
+ . = (. + 0x00FF) & 0xFFFFFF00;
+ _erotext = .;
+ PROVIDE (erotext = .);
+ .reloc :
+ {
+ *(.got)
+ _GOT2_TABLE_ = .;
+ *(.got2)
+ _FIXUP_TABLE_ = .;
+ *(.fixup)
+ }
+ __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
+ __fixup_entries = (. - _FIXUP_TABLE_)>>2;
+
+ .data :
+ {
+ *(.data)
+ *(.data1)
+ *(.sdata)
+ *(.sdata2)
+ *(.dynamic)
+ CONSTRUCTORS
+ }
+ _edata = .;
+ PROVIDE (edata = .);
+
+ . = .;
+ __u_boot_cmd_start = .;
+ .u_boot_cmd : { *(.u_boot_cmd) }
+ __u_boot_cmd_end = .;
+
+
+ . = .;
+ __start___ex_table = .;
+ __ex_table : { *(__ex_table) }
+ __stop___ex_table = .;
+
+ . = ALIGN(256);
+ __init_begin = .;
+ .text.init : { *(.text.init) }
+ .data.init : { *(.data.init) }
+ . = ALIGN(256);
+ __init_end = .;
+
+ __bss_start = .;
+ .bss (NOLOAD) :
+ {
+ *(.sbss) *(.scommon)
+ *(.dynbss)
+ *(.bss)
+ *(COMMON)
+ }
+
+ _end = . ;
+ PROVIDE (end = .);
+}
--- /dev/null
+The Korat board has two NOR flashes, FLASH0 and FLASH1, which are connected to
+chip select 0 and 1, respectively. FLASH0 contains 16 MiB, and is mapped to
+addresses 0xFF000000 - 0xFFFFFFFF as U-Boot Flash Bank #2. FLASH1 contains
+from 16 to 128 MiB, and is mapped to 0xF?000000 - 0xF7FFFFFF as U-Boot Flash
+Bank #1 (with the starting address depending on the flash size detected at
+runtime). The write-enable pin on FLASH0 is disabled, so the contents of FLASH0
+cannot be modified in the field. This also prevents FLASH0 from executing
+commands to return chip information, so its configuration is hard-coded in
+U-Boot.
+
+There are two versions of U-Boot for Korat: "permanent" and "upgradable". The
+permanent U-Boot is pre-programmed at the top of FLASH0, e.g., at addresses
+0xFFFA0000 - 0xFFFFFFFF for the current 384 KiB size. The upgradable U-Boot is
+located 256 KiB from the top of FLASH1, e.g. at addresses 0xF7F6000 - 0xF7FC0000
+for the current 384 KiB size. FLASH1 addresses 0xF7FE0000 - 0xF7FF0000 are
+used for the U-Boot environmental parameters, and addresses 0xF7FC0000 -
+0xF7FDFFFF are used for the redundant copy of the parameters. These locations
+are used by both versions of U-Boot.
+
+On booting, the permanent U-Boot in FLASH0 begins executing. After performing
+minimal setup, it monitors the state of the board's Reset switch (GPIO47). If
+the switch is sensed as open before a timeout period, then U-Boot branches to
+address 0xF7FBFFFC. This causes the upgradable U-Boot to execute from the
+beginning. If the switch remains closed thoughout the timeout period, the
+permanent U-Boot activates the on-board buzzer until the switch is sensed as
+opened. It then continues to execute without branching to FLASH1. The effect
+of this is that normally the Korat board boots its upgradable U-Boot, but, if
+this has been corrupted, the user can boot the permanent U-Boot, which can then
+be used to erase and reload FLASH1 as needed.
+
+Note that it is not necessary for the permanent U-Boot to have all the latest
+features, but only that it have sufficient functionality (working "tftp",
+"erase", "cp.b", etc.) to repair FLASH1. Also, the permanent U-Boot makes no
+assumptions about the size of FLASH1 or the size of the upgradable U-Boot: it is
+sufficient that the upgradable U-Boot can be started by a branch to 0xF7FBFFFC.
+
+The build sequence:
+
+ make korat_config
+ make all perm=1
+
+builds the permanent U-Boot by selecting loader file "u-boot.lds" and defining
+preprocessor symbol "CONFIG_KORAT_PERMANENT". The default build:
+
+ make korat_config
+ make all
+
+creates the upgradable U-Boot but selecting loader file "u-boot-F7FC.lds" and
+leaving preprocessor symbol "CONFIG_KORAT_PERMANENT" undefined.
+
+2008-02-22, Larry Johnson <lrj@acm.org>
* Manufacturer's information serial EEPROM parameters
*/
#define MAN_DATA_EEPROM_ADDR 0x53 /* EEPROM I2C address */
-#define MAN_SERIAL_NO_FIELD 2
-#define MAN_SERIAL_NO_LENGTH 13
+#define MAN_INFO_FIELD 2
+#define MAN_INFO_LENGTH 9
#define MAN_MAC_ADDR_FIELD 3
-#define MAN_MAC_ADDR_LENGTH 17
+#define MAN_MAC_ADDR_LENGTH 12
/*
* Base addresses -- Note these are effective addresses where the actual
#define CFG_MONITOR_LEN (384 * 1024) /* Reserve 384 kiB for Monitor */
#define CFG_MALLOC_LEN (256 * 1024) /* Reserve 256 kiB for malloc() */
-#define CFG_BOOT_BASE_ADDR 0xf0000000
#define CFG_SDRAM_BASE 0x00000000 /* _must_ be 0 */
-#define CFG_FLASH_BASE 0xfc000000 /* start of FLASH */
+#define CFG_FLASH0_SIZE 0x01000000
+#define CFG_FLASH0_ADDR (-CFG_FLASH0_SIZE)
+#define CFG_FLASH1_TOP 0xF8000000
+#define CFG_FLASH1_MAX_SIZE 0x08000000
+#define CFG_FLASH1_ADDR (CFG_FLASH1_TOP - CFG_FLASH1_MAX_SIZE)
+#define CFG_FLASH_BASE CFG_FLASH1_ADDR /* start of FLASH */
#define CFG_MONITOR_BASE TEXT_BASE
#define CFG_OCM_BASE 0xe0010000 /* ocm */
#define CFG_OCM_DATA_ADDR CFG_OCM_BASE
#define CFG_PCI_BASE 0xe0000000 /* Internal PCI regs */
#define CFG_PCI_MEMBASE 0x80000000 /* mapped pci memory */
-#define CFG_PCI_MEMBASE1 CFG_PCI_MEMBASE + 0x10000000
-#define CFG_PCI_MEMBASE2 CFG_PCI_MEMBASE1 + 0x10000000
-#define CFG_PCI_MEMBASE3 CFG_PCI_MEMBASE2 + 0x10000000
/* Don't change either of these */
#define CFG_PERIPHERAL_BASE 0xef600000 /* internal peripherals */
/*
* FLASH related
*/
-#define CFG_FLASH_CFI /* The flash is CFI compatible */
-#define CFG_FLASH_CFI_DRIVER /* Use common CFI driver */
+#define CFG_FLASH_CFI /* The flash is CFI compatible */
+#define CFG_FLASH_CFI_DRIVER /* Use common CFI driver */
+#define CONFIG_FLASH_CFI_LEGACY /* Allow hard-coded config for FLASH0 */
-#define CFG_FLASH_BANKS_LIST { CFG_FLASH_BASE }
+#define CFG_FLASH_BANKS_LIST { CFG_FLASH1_ADDR, CFG_FLASH0_ADDR }
-#define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */
-#define CFG_MAX_FLASH_SECT 512 /* max number of sectors on one chip */
+#define CFG_MAX_FLASH_BANKS 2 /* max number of memory banks */
+#define CFG_MAX_FLASH_SECT 1024 /* max number of sectors on one chip */
#define CFG_FLASH_ERASE_TOUT 120000 /* Timeout for Flash Erase (in ms) */
#define CFG_FLASH_WRITE_TOUT 500 /* Timeout for Flash Write (in ms) */
#define CFG_FLASH_QUIET_TEST 1 /* don't warn upon unknown flash */
#define CFG_ENV_SECT_SIZE 0x20000 /* size of one complete sector */
-#define CFG_ENV_ADDR ((-CFG_MONITOR_LEN)-CFG_ENV_SECT_SIZE)
+#define CFG_ENV_ADDR (CFG_FLASH1_TOP - CFG_ENV_SECT_SIZE)
#define CFG_ENV_SIZE 0x2000 /* Total Size of Environment Sector */
-/* Address and size of Redundant Environment Sector */
-#define CFG_ENV_ADDR_REDUND (CFG_ENV_ADDR-CFG_ENV_SECT_SIZE)
-#define CFG_ENV_SIZE_REDUND (CFG_ENV_SIZE)
+/* Address and size of Redundant Environment Sector */
+#define CFG_ENV_ADDR_REDUND (CFG_ENV_ADDR - CFG_ENV_SECT_SIZE)
+#define CFG_ENV_SIZE_REDUND CFG_ENV_SIZE
/*
* DDR SDRAM
#define CFG_BOOTFILE "bootfile=/tftpboot/korat/uImage\0"
#define CFG_ROOTPATH "rootpath=/opt/eldk/ppc_4xxFP\0"
+/* Note: kernel_addr and ramdisk_addr assume that FLASH1 is 64 MiB. */
#define CONFIG_EXTRA_ENV_SETTINGS \
CFG_BOOTFILE \
CFG_ROOTPATH \
"bootm ${kernel_addr} ${ramdisk_addr}\0" \
"net_nfs=tftp 200000 ${bootfile};run nfsargs addip addtty;" \
"bootm\0" \
- "kernel_addr=FC000000\0" \
- "ramdisk_addr=FC180000\0" \
+ "kernel_addr=F4000000\0" \
+ "ramdisk_addr=F4400000\0" \
"load=tftp 200000 /tftpboot/${hostname}/u-boot.bin\0" \
"update=protect off FFFA0000 FFFFFFFF;era FFFA0000 FFFFFFFF;" \
"cp.b 200000 FFFA0000 60000\0" \
#define CONFIG_PHY_ADDR 2 /* PHY address, See schematics */
#define CONFIG_PHY_DYNAMIC_ANEG 1
-#define CONFIG_PHY_RESET 1 /* reset phy upon startup */
+#undef CONFIG_PHY_RESET /* Don't do software PHY reset */
#define CONFIG_PHY_GIGE 1 /* Include GbE speed/duplex detection */
#define CONFIG_HAS_ETH0
#define CONFIG_ZERO_BOOTDELAY_CHECK /* check for keypress on bootdelay==0 */
#define CONFIG_VERSION_VARIABLE 1 /* include version env variable */
+/*
+ * Korat-specific options
+ */
+#define CFG_KORAT_MAN_RESET_MS 10000 /* timeout for manufacturer reset */
+
/*
* PCI stuff
*/
*/
/* Memory Bank 0 (NOR-FLASH) initialization */
+#if CFG_FLASH0_SIZE == 0x01000000
+#define CFG_EBC_PB0AP 0x04017300
+#define CFG_EBC_PB0CR (CFG_FLASH0_ADDR | 0x0009A000)
+#elif CFG_FLASH0_SIZE == 0x04000000
#define CFG_EBC_PB0AP 0x04017300
-#define CFG_EBC_PB0CR (CFG_FLASH_BASE | 0x000DA000)
+#define CFG_EBC_PB0CR (CFG_FLASH0_ADDR | 0x000DA000)
+#else
+#error Unable to configure chip select for current CFG_FLASH0_SIZE
+#endif
/* Memory Bank 1 (NOR-FLASH) initialization */
+#if CFG_FLASH1_MAX_SIZE == 0x08000000
#define CFG_EBC_PB1AP 0x04017300
-#define CFG_EBC_PB1CR (0xF8000000 | 0x000DA000)
+#define CFG_EBC_PB1CR (CFG_FLASH1_ADDR | 0x000FA000)
+#else
+#error Unable to configure chip select for current CFG_FLASH1_MAX_SIZE
+#endif
/* Memory Bank 2 (CPLD) initialization */
#define CFG_EBC_PB2AP 0x04017300
* GPIO63 xxxx x x (reserved for trace port)
*/
+#define CFG_GPIO_ATMEGA_RESET_ 12
#define CFG_GPIO_ATMEGA_SS_ 13
#define CFG_GPIO_PHY0_FIBER_SEL 27
#define CFG_GPIO_PHY1_FIBER_SEL 28
#define CFG_GPIO_SFP1_TX_EN_ 33
#define CFG_GPIO_PHY0_EN 45
#define CFG_GPIO_PHY1_EN 46
+#define CFG_GPIO_RESET_PRESSED_ 47
/*
* PPC440 GPIO Configuration
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