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u-boot-brain/arch/powerpc/cpu/mpc5xxx/cpu_init.c
Stefan Roese a47a12becf Move arch/ppc to arch/powerpc 
As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>
2010-04-21 23:42:38 +02:00

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/*
* (C) Copyright 2000-2010
* 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>
#include <asm/io.h>
#include <watchdog.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)
{
volatile struct mpc5xxx_mmap_ctl *mm =
(struct mpc5xxx_mmap_ctl *) CONFIG_SYS_MBAR;
volatile struct mpc5xxx_lpb *lpb =
(struct mpc5xxx_lpb *) MPC5XXX_LPB;
volatile struct mpc5xxx_gpio *gpio =
(struct mpc5xxx_gpio *) MPC5XXX_GPIO;
volatile struct mpc5xxx_xlb *xlb =
(struct mpc5xxx_xlb *) MPC5XXX_XLBARB;
#if defined(CONFIG_SYS_IPBCLK_EQUALS_XLBCLK)
volatile struct mpc5xxx_cdm *cdm =
(struct mpc5xxx_cdm *) MPC5XXX_CDM;
#endif /* CONFIG_SYS_IPBCLK_EQUALS_XLBCLK */
#if defined(CONFIG_WATCHDOG)
volatile struct mpc5xxx_gpt *gpt0 =
(struct mpc5xxx_gpt *) MPC5XXX_GPT;
#endif /* CONFIG_WATCHDOG */
unsigned long addecr = (1 << 25); /* Boot_CS */
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
/* Clear initial global data */
memset ((void *) gd, 0, sizeof (gd_t));
/*
* Memory Controller: configure chip selects and enable them
*/
#if defined(CONFIG_SYS_BOOTCS_START) && defined(CONFIG_SYS_BOOTCS_SIZE)
out_be32(&mm->boot_start, START_REG(CONFIG_SYS_BOOTCS_START));
out_be32(&mm->boot_stop, STOP_REG(CONFIG_SYS_BOOTCS_START,
CONFIG_SYS_BOOTCS_SIZE));
#endif
#if defined(CONFIG_SYS_BOOTCS_CFG)
out_be32(&lpb->cs0_cfg, CONFIG_SYS_BOOTCS_CFG);
#endif
#if defined(CONFIG_SYS_CS0_START) && defined(CONFIG_SYS_CS0_SIZE)
out_be32(&mm->cs0_start, START_REG(CONFIG_SYS_CS0_START));
out_be32(&mm->cs0_stop, STOP_REG(CONFIG_SYS_CS0_START,
CONFIG_SYS_CS0_SIZE));
/* CS0 and BOOT_CS cannot be enabled at once. */
/* addecr |= (1 << 16); */
#endif
#if defined(CONFIG_SYS_CS0_CFG)
out_be32(&lpb->cs0_cfg, CONFIG_SYS_CS0_CFG);
#endif
#if defined(CONFIG_SYS_CS1_START) && defined(CONFIG_SYS_CS1_SIZE)
out_be32(&mm->cs1_start, START_REG(CONFIG_SYS_CS1_START));
out_be32(&mm->cs1_stop, STOP_REG(CONFIG_SYS_CS1_START,
CONFIG_SYS_CS1_SIZE));
addecr |= (1 << 17);
#endif
#if defined(CONFIG_SYS_CS1_CFG)
out_be32(&lpb->cs1_cfg, CONFIG_SYS_CS1_CFG);
#endif
#if defined(CONFIG_SYS_CS2_START) && defined(CONFIG_SYS_CS2_SIZE)
out_be32(&mm->cs2_start, START_REG(CONFIG_SYS_CS2_START));
out_be32(&mm->cs2_stop, STOP_REG(CONFIG_SYS_CS2_START,
CONFIG_SYS_CS2_SIZE));
addecr |= (1 << 18);
#endif
#if defined(CONFIG_SYS_CS2_CFG)
out_be32(&lpb->cs2_cfg, CONFIG_SYS_CS2_CFG);
#endif
#if defined(CONFIG_SYS_CS3_START) && defined(CONFIG_SYS_CS3_SIZE)
out_be32(&mm->cs3_start, START_REG(CONFIG_SYS_CS3_START));
out_be32(&mm->cs3_stop, STOP_REG(CONFIG_SYS_CS3_START,
CONFIG_SYS_CS3_SIZE));
addecr |= (1 << 19);
#endif
#if defined(CONFIG_SYS_CS3_CFG)
out_be32(&lpb->cs3_cfg, CONFIG_SYS_CS3_CFG);
#endif
#if defined(CONFIG_SYS_CS4_START) && defined(CONFIG_SYS_CS4_SIZE)
out_be32(&mm->cs4_start, START_REG(CONFIG_SYS_CS4_START));
out_be32(&mm->cs4_stop, STOP_REG(CONFIG_SYS_CS4_START,
CONFIG_SYS_CS4_SIZE));
addecr |= (1 << 20);
#endif
#if defined(CONFIG_SYS_CS4_CFG)
out_be32(&lpb->cs4_cfg, CONFIG_SYS_CS4_CFG);
#endif
#if defined(CONFIG_SYS_CS5_START) && defined(CONFIG_SYS_CS5_SIZE)
out_be32(&mm->cs5_start, START_REG(CONFIG_SYS_CS5_START));
out_be32(&mm->cs5_stop, STOP_REG(CONFIG_SYS_CS5_START,
CONFIG_SYS_CS5_SIZE));
addecr |= (1 << 21);
#endif
#if defined(CONFIG_SYS_CS5_CFG)
out_be32(&lpb->cs5_cfg, CONFIG_SYS_CS5_CFG);
#endif
addecr |= 1;
#if defined(CONFIG_SYS_CS6_START) && defined(CONFIG_SYS_CS6_SIZE)
out_be32(&mm->cs6_start, START_REG(CONFIG_SYS_CS6_START));
out_be32(&mm->cs6_stop, STOP_REG(CONFIG_SYS_CS6_START,
CONFIG_SYS_CS6_SIZE));
addecr |= (1 << 26);
#endif
#if defined(CONFIG_SYS_CS6_CFG)
out_be32(&lpb->cs6_cfg, CONFIG_SYS_CS6_CFG);
#endif
#if defined(CONFIG_SYS_CS7_START) && defined(CONFIG_SYS_CS7_SIZE)
out_be32(&mm->cs7_start, START_REG(CONFIG_SYS_CS7_START));
out_be32(&mm->cs7_stop, STOP_REG(CONFIG_SYS_CS7_START,
CONFIG_SYS_CS7_SIZE));
addecr |= (1 << 27);
#endif
#if defined(CONFIG_SYS_CS7_CFG)
out_be32(&lpb->cs7_cfg, CONFIG_SYS_CS7_CFG);
#endif
#if defined(CONFIG_SYS_CS_BURST)
out_be32(&lpb->cs_burst, CONFIG_SYS_CS_BURST);
#endif
#if defined(CONFIG_SYS_CS_DEADCYCLE)
out_be32(&lpb->cs_deadcycle, CONFIG_SYS_CS_DEADCYCLE);
#endif
/* Enable chip selects */
out_be32(&mm->ipbi_ws_ctrl, addecr);
out_be32(&lpb->cs_ctrl, (1 << 24));
/* Setup pin multiplexing */
#if defined(CONFIG_SYS_GPS_PORT_CONFIG)
out_be32(&gpio->port_config, CONFIG_SYS_GPS_PORT_CONFIG);
#endif
/* enable timebase */
setbits_be32(&xlb->config, (1 << 13));
/* Enable snooping for RAM */
setbits_be32(&xlb->config, (1 << 15));
out_be32(&xlb->snoop_window, CONFIG_SYS_SDRAM_BASE | 0x1d);
#if defined(CONFIG_SYS_IPBCLK_EQUALS_XLBCLK)
/* Motorola reports IPB should better run at 133 MHz. */
setbits_be32(&mm->ipbi_ws_ctrl, 1);
/* pci_clk_sel = 0x02, ipb_clk_sel = 0x00; */
addecr = in_be32(&cdm->cfg);
addecr &= ~0x103;
# if defined(CONFIG_SYS_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 /* CONFIG_SYS_PCICLK_EQUALS_IPBCLK_DIV2 */
out_be32(&cdm->cfg, addecr);
#endif /* CONFIG_SYS_IPBCLK_EQUALS_XLBCLK */
/* Configure the XLB Arbiter */
out_be32(&xlb->master_pri_enable, 0xff);
out_be32(&xlb->master_priority, 0x11111111);
#if defined(CONFIG_SYS_XLB_PIPELINING)
/* Enable piplining */
clrbits_be32(&xlb->config, (1 << 31));
#endif
#if defined(CONFIG_WATCHDOG)
/* Charge the watchdog timer - prescaler = 64k, count = 64k*/
out_be32(&gpt0->cir, 0x0000ffff);
out_be32(&gpt0->emsr, 0x9004); /* wden|ce|timer_ms */
reset_5xxx_watchdog();
#endif /* CONFIG_WATCHDOG */
}
/*
* initialize higher level parts of CPU like time base and timers
*/
int cpu_init_r (void)
{
volatile struct mpc5xxx_intr *intr =
(struct mpc5xxx_intr *) MPC5XXX_ICTL;
/* mask all interrupts */
out_be32(&intr->per_mask, 0xffffff00);
setbits_be32(&intr->main_mask, 0x0001ffff);
clrbits_be32(&intr->ctrl, 0x00000f00);
/* route critical ints to normal ints */
setbits_be32(&intr->ctrl, 0x00000001);
#if defined(CONFIG_CMD_NET) && defined(CONFIG_MPC5xxx_FEC)
/* load FEC microcode */
loadtask(0, 2);
#endif
return (0);
}
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