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Diffstat (limited to 'cpu/mpc85xx/commproc.c')
| -rw-r--r-- | cpu/mpc85xx/commproc.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/cpu/mpc85xx/commproc.c b/cpu/mpc85xx/commproc.c deleted file mode 100644 index 594aace..0000000 --- a/cpu/mpc85xx/commproc.c +++ /dev/null @@ -1,205 +0,0 @@ -/* - * Adapted for Motorola MPC8560 chips - * Xianghua Xiao <x.xiao@motorola.com> - * - * This file is based on "arch/ppc/8260_io/commproc.c" - here is it's - * copyright notice: - * - * General Purpose functions for the global management of the - * 8220 Communication Processor Module. - * Copyright (c) 1999 Dan Malek (dmalek@jlc.net) - * Copyright (c) 2000 MontaVista Software, Inc (source@mvista.com) - * 2.3.99 Updates - * Copyright (c) 2003 Motorola,Inc. - * - * In addition to the individual control of the communication - * channels, there are a few functions that globally affect the - * communication processor. - * - * Buffer descriptors must be allocated from the dual ported memory - * space. The allocator for that is here. When the communication - * process is reset, we reclaim the memory available. There is - * currently no deallocator for this memory. - */ -#include <common.h> -#include <asm/cpm_85xx.h> - -DECLARE_GLOBAL_DATA_PTR; - -/* - * because we have stack and init data in dual port ram - * we must reduce the size - */ -#undef CPM_DATAONLY_SIZE -#define CPM_DATAONLY_SIZE ((uint)(8 * 1024) - CPM_DATAONLY_BASE) - -void -m8560_cpm_reset(void) -{ - volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR; - volatile ulong count; - - gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET); - - /* Reclaim the DP memory for our use. - */ - gd->dp_alloc_base = CPM_DATAONLY_BASE; - gd->dp_alloc_top = gd->dp_alloc_base + CPM_DATAONLY_SIZE; - - /* - * Reset CPM - */ - cpm->im_cpm_cp.cpcr = CPM_CR_RST; - count = 0; - do { /* Spin until command processed */ - __asm__ __volatile__ ("eieio"); - } while ((cpm->im_cpm_cp.cpcr & CPM_CR_FLG) && ++count < 1000000); -} - -/* Allocate some memory from the dual ported ram. - * To help protocols with object alignment restrictions, we do that - * if they ask. - */ -uint -m8560_cpm_dpalloc(uint size, uint align) -{ - volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR; - uint retloc; - uint align_mask, off; - uint savebase; - - align_mask = align - 1; - savebase = gd->dp_alloc_base; - - if ((off = (gd->dp_alloc_base & align_mask)) != 0) - gd->dp_alloc_base += (align - off); - - if ((off = size & align_mask) != 0) - size += align - off; - - if ((gd->dp_alloc_base + size) >= gd->dp_alloc_top) { - gd->dp_alloc_base = savebase; - panic("m8560_cpm_dpalloc: ran out of dual port ram!"); - } - - retloc = gd->dp_alloc_base; - gd->dp_alloc_base += size; - - memset((void *)&(cpm->im_dprambase[retloc]), 0, size); - - return(retloc); -} - -/* We also own one page of host buffer space for the allocation of - * UART "fifos" and the like. - */ -uint -m8560_cpm_hostalloc(uint size, uint align) -{ - /* the host might not even have RAM yet - just use dual port RAM */ - return (m8560_cpm_dpalloc(size, align)); -} - -/* Set a baud rate generator. This needs lots of work. There are - * eight BRGs, which can be connected to the CPM channels or output - * as clocks. The BRGs are in two different block of internal - * memory mapped space. - * The baud rate clock is the system clock divided by something. - * It was set up long ago during the initial boot phase and is - * is given to us. - * Baud rate clocks are zero-based in the driver code (as that maps - * to port numbers). Documentation uses 1-based numbering. - */ -#define BRG_INT_CLK gd->brg_clk -#define BRG_UART_CLK ((BRG_INT_CLK + 15) / 16) - -/* This function is used by UARTS, or anything else that uses a 16x - * oversampled clock. - */ -void -m8560_cpm_setbrg(uint brg, uint rate) -{ - volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR; - volatile uint *bp; - - /* This is good enough to get SMCs running..... - */ - if (brg < 4) { - bp = (uint *)&(cpm->im_cpm_brg1.brgc1); - } - else { - bp = (uint *)&(cpm->im_cpm_brg2.brgc5); - brg -= 4; - } - bp += brg; - *bp = (((((BRG_UART_CLK+rate-1)/rate)-1)&0xfff)<<1)|CPM_BRG_EN; -} - -/* This function is used to set high speed synchronous baud rate - * clocks. - */ -void -m8560_cpm_fastbrg(uint brg, uint rate, int div16) -{ - volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR; - volatile uint *bp; - - /* This is good enough to get SMCs running..... - */ - if (brg < 4) { - bp = (uint *)&(cpm->im_cpm_brg1.brgc1); - } - else { - bp = (uint *)&(cpm->im_cpm_brg2.brgc5); - brg -= 4; - } - bp += brg; - *bp = (((((BRG_INT_CLK+rate-1)/rate)-1)&0xfff)<<1)|CPM_BRG_EN; - if (div16) - *bp |= CPM_BRG_DIV16; -} - -/* This function is used to set baud rate generators using an external - * clock source and 16x oversampling. - */ - -void -m8560_cpm_extcbrg(uint brg, uint rate, uint extclk, int pinsel) -{ - volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR; - volatile uint *bp; - - if (brg < 4) { - bp = (uint *)&(cpm->im_cpm_brg1.brgc1); - } - else { - bp = (uint *)&(cpm->im_cpm_brg2.brgc5); - brg -= 4; - } - bp += brg; - *bp = ((((((extclk/16)+rate-1)/rate)-1)&0xfff)<<1)|CPM_BRG_EN; - if (pinsel == 0) - *bp |= CPM_BRG_EXTC_CLK3_9; - else - *bp |= CPM_BRG_EXTC_CLK5_15; -} - -#ifdef CONFIG_POST - -void post_word_store (ulong a) -{ - volatile ulong *save_addr = - (volatile ulong *)(CONFIG_SYS_IMMR + CPM_POST_WORD_ADDR); - - *save_addr = a; -} - -ulong post_word_load (void) -{ - volatile ulong *save_addr = - (volatile ulong *)(CONFIG_SYS_IMMR + CPM_POST_WORD_ADDR); - - return *save_addr; -} - -#endif /* CONFIG_POST */ |