diff options
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/mpc8xx/serial.c | 72 |
1 files changed, 24 insertions, 48 deletions
diff --git a/cpu/mpc8xx/serial.c b/cpu/mpc8xx/serial.c index 972f190..664db65 100644 --- a/cpu/mpc8xx/serial.c +++ b/cpu/mpc8xx/serial.c @@ -148,12 +148,10 @@ static int smc_init (void) up->smc_rpbase = 0; #endif - /* Disable transmitter/receiver. - */ + /* Disable transmitter/receiver. */ sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN); - /* Enable SDMA. - */ + /* Enable SDMA. */ im->im_siu_conf.sc_sdcr = 1; /* clear error conditions */ @@ -171,21 +169,19 @@ static int smc_init (void) #endif #if defined(CONFIG_8xx_CONS_SMC1) - /* Use Port B for SMC1 instead of other functions. - */ + /* Use Port B for SMC1 instead of other functions. */ cp->cp_pbpar |= 0x000000c0; cp->cp_pbdir &= ~0x000000c0; cp->cp_pbodr &= ~0x000000c0; #else /* CONFIG_8xx_CONS_SMC2 */ # if defined(CONFIG_MPC823) || defined(CONFIG_MPC850) - /* Use Port A for SMC2 instead of other functions. - */ + /* Use Port A for SMC2 instead of other functions. */ ip->iop_papar |= 0x00c0; ip->iop_padir &= ~0x00c0; ip->iop_paodr &= ~0x00c0; # else /* must be a 860 then */ /* Use Port B for SMC2 instead of other functions. - */ + */ cp->cp_pbpar |= 0x00000c00; cp->cp_pbdir &= ~0x00000c00; cp->cp_pbodr &= ~0x00000c00; @@ -232,8 +228,7 @@ static int smc_init (void) rtx->txbd.cbd_bufaddr = (uint) &rtx->txbuf; rtx->txbd.cbd_sc = 0; - /* Set up the uart parameters in the parameter ram. - */ + /* Set up the uart parameters in the parameter ram. */ up->smc_rbase = dpaddr; up->smc_tbase = dpaddr+sizeof(cbd_t); up->smc_rfcr = SMC_EB; @@ -274,8 +269,7 @@ static int smc_init (void) smc_setbrg (); #endif - /* Make the first buffer the only buffer. - */ + /* Make the first buffer the only buffer. */ rtx->txbd.cbd_sc |= BD_SC_WRAP; rtx->rxbd.cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP; @@ -284,9 +278,7 @@ static int smc_init (void) up->smc_maxidl = CONFIG_SYS_MAXIDLE; rtx->rxindex = 0; - /* Initialize Tx/Rx parameters. - */ - + /* Initialize Tx/Rx parameters. */ while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */ ; @@ -295,8 +287,7 @@ static int smc_init (void) while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */ ; - /* Enable transmitter/receiver. - */ + /* Enable transmitter/receiver. */ sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN; return (0); @@ -325,8 +316,7 @@ smc_putc(const char c) rtx = (serialbuffer_t *)&cpmp->cp_dpmem[up->smc_rbase]; - /* Wait for last character to go. - */ + /* Wait for last character to go. */ rtx->txbuf = c; rtx->txbd.cbd_datlen = 1; rtx->txbd.cbd_sc |= BD_SC_READY; @@ -361,8 +351,7 @@ smc_getc(void) #endif rtx = (serialbuffer_t *)&cpmp->cp_dpmem[up->smc_rbase]; - /* Wait for character to show up. - */ + /* Wait for character to show up. */ while (rtx->rxbd.cbd_sc & BD_SC_EMPTY) WATCHDOG_RESET (); @@ -465,8 +454,7 @@ static int scc_init (void) } #endif /* CONFIG_LWMON */ - /* Disable transmitter/receiver. - */ + /* Disable transmitter/receiver. */ sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); #if (SCC_INDEX == 2) && defined(CONFIG_MPC850) @@ -491,8 +479,7 @@ static int scc_init (void) ip->iop_pdpar |= ((3 << (2 * SCC_INDEX))); #endif - /* Allocate space for two buffer descriptors in the DP ram. - */ + /* Allocate space for two buffer descriptors in the DP ram. */ #ifdef CONFIG_SYS_ALLOC_DPRAM dpaddr = dpram_alloc_align (sizeof(cbd_t)*2 + 2, 8) ; @@ -500,8 +487,7 @@ static int scc_init (void) dpaddr = CPM_SERIAL2_BASE ; #endif - /* Enable SDMA. - */ + /* Enable SDMA. */ im->im_siu_conf.sc_sdcr = 0x0001; /* Set the physical address of the host memory buffers in @@ -515,17 +501,14 @@ static int scc_init (void) tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1; tbdf->cbd_sc = 0; - /* Set up the baud rate generator. - */ + /* Set up the baud rate generator. */ scc_setbrg (); - /* Set up the uart parameters in the parameter ram. - */ + /* Set up the uart parameters in the parameter ram. */ up->scc_genscc.scc_rbase = dpaddr; up->scc_genscc.scc_tbase = dpaddr+sizeof(cbd_t); - /* Initialize Tx/Rx parameters. - */ + /* Initialize Tx/Rx parameters. */ while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */ ; cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SCC, CPM_CR_INIT_TRX) | CPM_CR_FLG; @@ -556,8 +539,7 @@ static int scc_init (void) up->scc_char8 = 0x8000; up->scc_rccm = 0xc0ff; - /* Set low latency / small fifo. - */ + /* Set low latency / small fifo. */ sp->scc_gsmrh = SCC_GSMRH_RFW; /* Set SCC(x) clock mode to 16x @@ -566,8 +548,7 @@ static int scc_init (void) * Wire BRG1 to SCCn */ - /* Set UART mode, clock divider 16 on Tx and Rx - */ + /* Set UART mode, clock divider 16 on Tx and Rx */ sp->scc_gsmrl &= ~0xF; sp->scc_gsmrl |= (SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16); @@ -575,20 +556,17 @@ static int scc_init (void) sp->scc_psmr = 0; sp->scc_psmr |= SCU_PSMR_CL; - /* Mask all interrupts and remove anything pending. - */ + /* Mask all interrupts and remove anything pending. */ sp->scc_sccm = 0; sp->scc_scce = 0xffff; sp->scc_dsr = 0x7e7e; sp->scc_psmr = 0x3000; - /* Make the first buffer the only buffer. - */ + /* Make the first buffer the only buffer. */ tbdf->cbd_sc |= BD_SC_WRAP; rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP; - /* Enable transmitter/receiver. - */ + /* Enable transmitter/receiver. */ sp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT); return (0); @@ -615,8 +593,7 @@ scc_putc(const char c) tbdf = (cbd_t *)&cpmp->cp_dpmem[up->scc_genscc.scc_tbase]; - /* Wait for last character to go. - */ + /* Wait for last character to go. */ buf = (char *)tbdf->cbd_bufaddr; @@ -653,8 +630,7 @@ scc_getc(void) rbdf = (cbd_t *)&cpmp->cp_dpmem[up->scc_genscc.scc_rbase]; - /* Wait for character to show up. - */ + /* Wait for character to show up. */ buf = (unsigned char *)rbdf->cbd_bufaddr; while (rbdf->cbd_sc & BD_SC_EMPTY) |