Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-12-02 01:19:49 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/cpu/mpc5xxx/cpu_init.c
Bartlomiej Sieka c99512d6bd MPC5xxx: Change names of defines related to IPB and PCI clocks. 
Both CFG_PCISPEED_66 and CFG_IPBSPEED_133 are misnamed, as defining
them does not cause PCI or IPB clocks to run at the specified speed.
Instead, they configure divisors used to calculate said clocks. This
patch renames the defines according to their real function.

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Acked-by: Bartlomiej Sieka <tur@semihalf.com>
2007-05-27 16:53:43 +02:00

207 lines
6.2 KiB
C
Raw Blame History

/*
* (C) Copyright 2000-2003
* 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
*/
#include <common.h>
#include <mpc5xxx.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* Breath some life into the CPU...
*
* Set up the memory map,
* initialize a bunch of registers.
*/
void cpu_init_f (void)
{
unsigned long addecr = (1 << 25); /* Boot_CS */
#if defined(CFG_RAMBOOT) && defined(CONFIG_MGT5100)
addecr |= (1 << 22); /* SDRAM enable */
#endif
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
/* Clear initial global data */
memset ((void *) gd, 0, sizeof (gd_t));
/*
* Memory Controller: configure chip selects and enable them
*/
#if defined(CFG_BOOTCS_START) && defined(CFG_BOOTCS_SIZE)
*(vu_long *)MPC5XXX_BOOTCS_START = START_REG(CFG_BOOTCS_START);
*(vu_long *)MPC5XXX_BOOTCS_STOP = STOP_REG(CFG_BOOTCS_START,
CFG_BOOTCS_SIZE);
#endif
#if defined(CFG_BOOTCS_CFG)
*(vu_long *)MPC5XXX_BOOTCS_CFG = CFG_BOOTCS_CFG;
#endif
#if defined(CFG_CS0_START) && defined(CFG_CS0_SIZE)
*(vu_long *)MPC5XXX_CS0_START = START_REG(CFG_CS0_START);
*(vu_long *)MPC5XXX_CS0_STOP = STOP_REG(CFG_CS0_START, CFG_CS0_SIZE);
/* CS0 and BOOT_CS cannot be enabled at once. */
/* addecr |= (1 << 16); */
#endif
#if defined(CFG_CS0_CFG)
*(vu_long *)MPC5XXX_CS0_CFG = CFG_CS0_CFG;
#endif
#if defined(CFG_CS1_START) && defined(CFG_CS1_SIZE)
*(vu_long *)MPC5XXX_CS1_START = START_REG(CFG_CS1_START);
*(vu_long *)MPC5XXX_CS1_STOP = STOP_REG(CFG_CS1_START, CFG_CS1_SIZE);
addecr |= (1 << 17);
#endif
#if defined(CFG_CS1_CFG)
*(vu_long *)MPC5XXX_CS1_CFG = CFG_CS1_CFG;
#endif
#if defined(CFG_CS2_START) && defined(CFG_CS2_SIZE)
*(vu_long *)MPC5XXX_CS2_START = START_REG(CFG_CS2_START);
*(vu_long *)MPC5XXX_CS2_STOP = STOP_REG(CFG_CS2_START, CFG_CS2_SIZE);
addecr |= (1 << 18);
#endif
#if defined(CFG_CS2_CFG)
*(vu_long *)MPC5XXX_CS2_CFG = CFG_CS2_CFG;
#endif
#if defined(CFG_CS3_START) && defined(CFG_CS3_SIZE)
*(vu_long *)MPC5XXX_CS3_START = START_REG(CFG_CS3_START);
*(vu_long *)MPC5XXX_CS3_STOP = STOP_REG(CFG_CS3_START, CFG_CS3_SIZE);
addecr |= (1 << 19);
#endif
#if defined(CFG_CS3_CFG)
*(vu_long *)MPC5XXX_CS3_CFG = CFG_CS3_CFG;
#endif
#if defined(CFG_CS4_START) && defined(CFG_CS4_SIZE)
*(vu_long *)MPC5XXX_CS4_START = START_REG(CFG_CS4_START);
*(vu_long *)MPC5XXX_CS4_STOP = STOP_REG(CFG_CS4_START, CFG_CS4_SIZE);
addecr |= (1 << 20);
#endif
#if defined(CFG_CS4_CFG)
*(vu_long *)MPC5XXX_CS4_CFG = CFG_CS4_CFG;
#endif
#if defined(CFG_CS5_START) && defined(CFG_CS5_SIZE)
*(vu_long *)MPC5XXX_CS5_START = START_REG(CFG_CS5_START);
*(vu_long *)MPC5XXX_CS5_STOP = STOP_REG(CFG_CS5_START, CFG_CS5_SIZE);
addecr |= (1 << 21);
#endif
#if defined(CFG_CS5_CFG)
*(vu_long *)MPC5XXX_CS5_CFG = CFG_CS5_CFG;
#endif
#if defined(CONFIG_MPC5200)
addecr |= 1;
#if defined(CFG_CS6_START) && defined(CFG_CS6_SIZE)
*(vu_long *)MPC5XXX_CS6_START = START_REG(CFG_CS6_START);
*(vu_long *)MPC5XXX_CS6_STOP = STOP_REG(CFG_CS6_START, CFG_CS6_SIZE);
addecr |= (1 << 26);
#endif
#if defined(CFG_CS6_CFG)
*(vu_long *)MPC5XXX_CS6_CFG = CFG_CS6_CFG;
#endif
#if defined(CFG_CS7_START) && defined(CFG_CS7_SIZE)
*(vu_long *)MPC5XXX_CS7_START = START_REG(CFG_CS7_START);
*(vu_long *)MPC5XXX_CS7_STOP = STOP_REG(CFG_CS7_START, CFG_CS7_SIZE);
addecr |= (1 << 27);
#endif
#if defined(CFG_CS7_CFG)
*(vu_long *)MPC5XXX_CS7_CFG = CFG_CS7_CFG;
#endif
#if defined(CFG_CS_BURST)
*(vu_long *)MPC5XXX_CS_BURST = CFG_CS_BURST;
#endif
#if defined(CFG_CS_DEADCYCLE)
*(vu_long *)MPC5XXX_CS_DEADCYCLE = CFG_CS_DEADCYCLE;
#endif
#endif /* CONFIG_MPC5200 */
/* Enable chip selects */
*(vu_long *)MPC5XXX_ADDECR = addecr;
*(vu_long *)MPC5XXX_CS_CTRL = (1 << 24);
/* Setup pin multiplexing */
#if defined(CFG_GPS_PORT_CONFIG)
*(vu_long *)MPC5XXX_GPS_PORT_CONFIG = CFG_GPS_PORT_CONFIG;
#endif
#if defined(CONFIG_MPC5200)
/* enable timebase */
*(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 13);
/* Enable snooping for RAM */
*(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 15);
*(vu_long *)(MPC5XXX_XLBARB + 0x70) = CFG_SDRAM_BASE | 0x1d;
# if defined(CFG_IPBCLK_EQUALS_XLBCLK)
/* Motorola reports IPB should better run at 133 MHz. */
*(vu_long *)MPC5XXX_ADDECR |= 1;
/* pci_clk_sel = 0x02, ipb_clk_sel = 0x00; */
addecr = *(vu_long *)MPC5XXX_CDM_CFG;
addecr &= ~0x103;
# if defined(CFG_PCICLK_EQUALS_IPBCLK_DIV2)
/* pci_clk_sel = 0x01 -> IPB_CLK/2 */
addecr |= 0x01;
# else
/* pci_clk_sel = 0x02 -> XLB_CLK/4 = IPB_CLK/4 */
addecr |= 0x02;
# endif /* CFG_PCICLK_EQUALS_IPBCLK_DIV2 */
*(vu_long *)MPC5XXX_CDM_CFG = addecr;
# endif /* CFG_IPBCLK_EQUALS_XLBCLK */
/* Configure the XLB Arbiter */
*(vu_long *)MPC5XXX_XLBARB_MPRIEN = 0xff;
*(vu_long *)MPC5XXX_XLBARB_MPRIVAL = 0x11111111;
# if defined(CFG_XLB_PIPELINING)
/* Enable piplining */
*(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~(1 << 31);
# endif
#endif /* CONFIG_MPC5200 */
}
/*
* initialize higher level parts of CPU like time base and timers
*/
int cpu_init_r (void)
{
/* mask all interrupts */
#if defined(CONFIG_MGT5100)
*(vu_long *)MPC5XXX_ICTL_PER_MASK = 0xfffffc00;
#elif defined(CONFIG_MPC5200)
*(vu_long *)MPC5XXX_ICTL_PER_MASK = 0xffffff00;
#endif
*(vu_long *)MPC5XXX_ICTL_CRIT |= 0x0001ffff;
*(vu_long *)MPC5XXX_ICTL_EXT &= ~0x00000f00;
/* route critical ints to normal ints */
*(vu_long *)MPC5XXX_ICTL_EXT |= 0x00000001;
#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_MPC5xxx_FEC)
/* load FEC microcode */
loadtask(0, 2);
#endif
return (0);
}
Reference in a new issue View git blame Copy permalink