diff options
Diffstat (limited to 'arch/ppc/mach-mpc5xxx/cpu_init.c')
| -rw-r--r-- | arch/ppc/mach-mpc5xxx/cpu_init.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/arch/ppc/mach-mpc5xxx/cpu_init.c b/arch/ppc/mach-mpc5xxx/cpu_init.c new file mode 100644 index 0000000000..b8c069f3a0 --- /dev/null +++ b/arch/ppc/mach-mpc5xxx/cpu_init.c @@ -0,0 +1,201 @@ +/* + * (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 <asm/arch/mpc5xxx.h> +#include <types.h> + +/* + * 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 + + /* + * 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_CS5_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_IPBSPEED_133) + /* 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_PCISPEED_66) + /* pci_clk_sel = 0x01 -> IPB_CLK/2 */ + addecr |= 0x01; +# else + /* pci_clk_sel = 0x02 -> XLB_CLK/4 = IPB_CLK/4 */ + addecr |= 0x02; +# endif /* CFG_PCISPEED_66 */ + *(vu_long *)MPC5XXX_CDM_CFG = addecr; +# endif /* CFG_IPBSPEED_133 */ + /* 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; + +#ifdef CONFIG_DRIVER_NET_MPC5200 + /* load FEC microcode */ + loadtask(0, 2); +#endif + + return (0); +} |