+++ /dev/null
-/*
- * (C) Copyright 2002
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-
-/*
- * UART test
- *
- * The Serial Management Controllers (SMC) and the Serial Communication
- * Controllers (SCC) listed in ctlr_list array below are tested in
- * the loopback UART mode.
- * The controllers are configured accordingly and several characters
- * are transmitted. The configurable test parameters are:
- * MIN_PACKET_LENGTH - minimum size of packet to transmit
- * MAX_PACKET_LENGTH - maximum size of packet to transmit
- * TEST_NUM - number of tests
- */
-
-#include <post.h>
-#if CONFIG_POST & CONFIG_SYS_POST_UART
-#if defined(CONFIG_8xx)
-#include <commproc.h>
-#elif defined(CONFIG_MPC8260)
-#include <asm/cpm_8260.h>
-#else
-#error "Apparently a bad configuration, please fix."
-#endif
-#include <command.h>
-#include <serial.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define CTLR_SMC 0
-#define CTLR_SCC 1
-
-/* The list of controllers to test */
-#if defined(CONFIG_MPC823)
-static int ctlr_list[][2] =
- { {CTLR_SMC, 0}, {CTLR_SMC, 1}, {CTLR_SCC, 1} };
-#else
-static int ctlr_list[][2] = { };
-#endif
-
-static struct {
- void (*init) (int index);
- void (*halt) (int index);
- void (*putc) (int index, const char c);
- int (*getc) (int index);
-} ctlr_proc[2];
-
-static char *ctlr_name[2] = { "SMC", "SCC" };
-
-static int proff_smc[] = { PROFF_SMC1, PROFF_SMC2 };
-static int proff_scc[] =
- { PROFF_SCC1, PROFF_SCC2, PROFF_SCC3, PROFF_SCC4 };
-
-/*
- * SMC callbacks
- */
-
-static void smc_init (int smc_index)
-{
- static int cpm_cr_ch[] = { CPM_CR_CH_SMC1, CPM_CR_CH_SMC2 };
-
- volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
- volatile smc_t *sp;
- volatile smc_uart_t *up;
- volatile cbd_t *tbdf, *rbdf;
- volatile cpm8xx_t *cp = &(im->im_cpm);
- uint dpaddr;
-
- /* initialize pointers to SMC */
-
- sp = (smc_t *) & (cp->cp_smc[smc_index]);
- up = (smc_uart_t *) & cp->cp_dparam[proff_smc[smc_index]];
-
- /* Disable transmitter/receiver.
- */
- sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
-
- /* Enable SDMA.
- */
- im->im_siu_conf.sc_sdcr = 1;
-
- /* clear error conditions */
-#ifdef CONFIG_SYS_SDSR
- im->im_sdma.sdma_sdsr = CONFIG_SYS_SDSR;
-#else
- im->im_sdma.sdma_sdsr = 0x83;
-#endif
-
- /* clear SDMA interrupt mask */
-#ifdef CONFIG_SYS_SDMR
- im->im_sdma.sdma_sdmr = CONFIG_SYS_SDMR;
-#else
- im->im_sdma.sdma_sdmr = 0x00;
-#endif
-
- /* Set the physical address of the host memory buffers in
- * the buffer descriptors.
- */
- dpaddr = CPM_POST_BASE;
-
- /* Allocate space for two buffer descriptors in the DP ram.
- * For now, this address seems OK, but it may have to
- * change with newer versions of the firmware.
- * damm: allocating space after the two buffers for rx/tx data
- */
-
- rbdf = (cbd_t *) & cp->cp_dpmem[dpaddr];
- rbdf->cbd_bufaddr = (uint) (rbdf + 2);
- rbdf->cbd_sc = 0;
- tbdf = rbdf + 1;
- tbdf->cbd_bufaddr = ((uint) (rbdf + 2)) + 1;
- tbdf->cbd_sc = 0;
-
- /* 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;
- up->smc_tfcr = SMC_EB;
-
- /* Set UART mode, 8 bit, no parity, one stop.
- * Enable receive and transmit.
- * Set local loopback mode.
- */
- sp->smc_smcmr = smcr_mk_clen (9) | SMCMR_SM_UART | (ushort) 0x0004;
-
- /* Mask all interrupts and remove anything pending.
- */
- sp->smc_smcm = 0;
- sp->smc_smce = 0xff;
-
- /* Set up the baud rate generator.
- */
- cp->cp_simode = 0x00000000;
-
- cp->cp_brgc1 =
- (((gd->cpu_clk / 16 / gd->baudrate) -
- 1) << 1) | CPM_BRG_EN;
-
- /* Make the first buffer the only buffer.
- */
- tbdf->cbd_sc |= BD_SC_WRAP;
- rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
-
- /* Single character receive.
- */
- up->smc_mrblr = 1;
- up->smc_maxidl = 0;
-
- /* 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[smc_index], CPM_CR_INIT_TRX) | CPM_CR_FLG;
-
- while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
- ;
-
- /* Enable transmitter/receiver.
- */
- sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
-}
-
-static void smc_halt(int smc_index)
-{
-}
-
-static void smc_putc (int smc_index, const char c)
-{
- volatile cbd_t *tbdf;
- volatile char *buf;
- volatile smc_uart_t *up;
- volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
- volatile cpm8xx_t *cpmp = &(im->im_cpm);
-
- up = (smc_uart_t *) & cpmp->cp_dparam[proff_smc[smc_index]];
-
- tbdf = (cbd_t *) & cpmp->cp_dpmem[up->smc_tbase];
-
- /* Wait for last character to go.
- */
-
- buf = (char *) tbdf->cbd_bufaddr;
-#if 0
- __asm__ ("eieio");
- while (tbdf->cbd_sc & BD_SC_READY)
- __asm__ ("eieio");
-#endif
-
- *buf = c;
- tbdf->cbd_datlen = 1;
- tbdf->cbd_sc |= BD_SC_READY;
- __asm__ ("eieio");
-#if 1
- while (tbdf->cbd_sc & BD_SC_READY)
- __asm__ ("eieio");
-#endif
-}
-
-static int smc_getc (int smc_index)
-{
- volatile cbd_t *rbdf;
- volatile unsigned char *buf;
- volatile smc_uart_t *up;
- volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
- volatile cpm8xx_t *cpmp = &(im->im_cpm);
- unsigned char c;
- int i;
-
- up = (smc_uart_t *) & cpmp->cp_dparam[proff_smc[smc_index]];
-
- rbdf = (cbd_t *) & cpmp->cp_dpmem[up->smc_rbase];
-
- /* Wait for character to show up.
- */
- buf = (unsigned char *) rbdf->cbd_bufaddr;
-#if 0
- while (rbdf->cbd_sc & BD_SC_EMPTY);
-#else
- for (i = 100; i > 0; i--) {
- if (!(rbdf->cbd_sc & BD_SC_EMPTY))
- break;
- udelay (1000);
- }
-
- if (i == 0)
- return -1;
-#endif
- c = *buf;
- rbdf->cbd_sc |= BD_SC_EMPTY;
-
- return (c);
-}
-
- /*
- * SCC callbacks
- */
-
-static void scc_init (int scc_index)
-{
- static int cpm_cr_ch[] = {
- CPM_CR_CH_SCC1,
- CPM_CR_CH_SCC2,
- CPM_CR_CH_SCC3,
- CPM_CR_CH_SCC4,
- };
-
- volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
- volatile scc_t *sp;
- volatile scc_uart_t *up;
- volatile cbd_t *tbdf, *rbdf;
- volatile cpm8xx_t *cp = &(im->im_cpm);
- uint dpaddr;
-
- /* initialize pointers to SCC */
-
- sp = (scc_t *) & (cp->cp_scc[scc_index]);
- up = (scc_uart_t *) & cp->cp_dparam[proff_scc[scc_index]];
-
- /* Disable transmitter/receiver.
- */
- sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
-
- dpaddr = CPM_POST_BASE;
-
- /* Enable SDMA.
- */
- im->im_siu_conf.sc_sdcr = 0x0001;
-
- /* Set the physical address of the host memory buffers in
- * the buffer descriptors.
- */
-
- rbdf = (cbd_t *) & cp->cp_dpmem[dpaddr];
- rbdf->cbd_bufaddr = (uint) (rbdf + 2);
- rbdf->cbd_sc = 0;
- tbdf = rbdf + 1;
- tbdf->cbd_bufaddr = ((uint) (rbdf + 2)) + 1;
- tbdf->cbd_sc = 0;
-
- /* Set up the baud rate generator.
- */
- cp->cp_sicr &= ~(0x000000FF << (8 * scc_index));
- /* no |= needed, since BRG1 is 000 */
-
- cp->cp_brgc1 =
- (((gd->cpu_clk / 16 / gd->baudrate) -
- 1) << 1) | CPM_BRG_EN;
-
- /* 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.
- */
- while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
- ;
- cp->cp_cpcr =
- mk_cr_cmd (cpm_cr_ch[scc_index], CPM_CR_INIT_TRX) | CPM_CR_FLG;
-
- while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
- ;
-
- up->scc_genscc.scc_rfcr = SCC_EB | 0x05;
- up->scc_genscc.scc_tfcr = SCC_EB | 0x05;
-
- up->scc_genscc.scc_mrblr = 1; /* Single character receive */
- up->scc_maxidl = 0; /* disable max idle */
- up->scc_brkcr = 1; /* send one break character on stop TX */
- up->scc_parec = 0;
- up->scc_frmec = 0;
- up->scc_nosec = 0;
- up->scc_brkec = 0;
- up->scc_uaddr1 = 0;
- up->scc_uaddr2 = 0;
- up->scc_toseq = 0;
- up->scc_char1 = 0x8000;
- up->scc_char2 = 0x8000;
- up->scc_char3 = 0x8000;
- up->scc_char4 = 0x8000;
- up->scc_char5 = 0x8000;
- up->scc_char6 = 0x8000;
- up->scc_char7 = 0x8000;
- up->scc_char8 = 0x8000;
- up->scc_rccm = 0xc0ff;
-
- /* Set low latency / small fifo.
- */
- sp->scc_gsmrh = SCC_GSMRH_RFW;
-
- /* Set UART mode
- */
- sp->scc_gsmrl &= ~0xF;
- sp->scc_gsmrl |= SCC_GSMRL_MODE_UART;
-
- /* Set local loopback mode.
- */
- sp->scc_gsmrl &= ~SCC_GSMRL_DIAG_LE;
- sp->scc_gsmrl |= SCC_GSMRL_DIAG_LOOP;
-
- /* Set clock divider 16 on Tx and Rx
- */
- sp->scc_gsmrl |= (SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16);
-
- sp->scc_psmr |= SCU_PSMR_CL;
-
- /* 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.
- */
- tbdf->cbd_sc |= BD_SC_WRAP;
- rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
-
- /* Enable transmitter/receiver.
- */
- sp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
-}
-
-static void scc_halt(int scc_index)
-{
- volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
- volatile cpm8xx_t *cp = &(im->im_cpm);
- volatile scc_t *sp = (scc_t *) & (cp->cp_scc[scc_index]);
-
- sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT | SCC_GSMRL_DIAG_LE);
-}
-
-static void scc_putc (int scc_index, const char c)
-{
- volatile cbd_t *tbdf;
- volatile char *buf;
- volatile scc_uart_t *up;
- volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
- volatile cpm8xx_t *cpmp = &(im->im_cpm);
-
- up = (scc_uart_t *) & cpmp->cp_dparam[proff_scc[scc_index]];
-
- tbdf = (cbd_t *) & cpmp->cp_dpmem[up->scc_genscc.scc_tbase];
-
- /* Wait for last character to go.
- */
-
- buf = (char *) tbdf->cbd_bufaddr;
-#if 0
- __asm__ ("eieio");
- while (tbdf->cbd_sc & BD_SC_READY)
- __asm__ ("eieio");
-#endif
-
- *buf = c;
- tbdf->cbd_datlen = 1;
- tbdf->cbd_sc |= BD_SC_READY;
- __asm__ ("eieio");
-#if 1
- while (tbdf->cbd_sc & BD_SC_READY)
- __asm__ ("eieio");
-#endif
-}
-
-static int scc_getc (int scc_index)
-{
- volatile cbd_t *rbdf;
- volatile unsigned char *buf;
- volatile scc_uart_t *up;
- volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
- volatile cpm8xx_t *cpmp = &(im->im_cpm);
- unsigned char c;
- int i;
-
- up = (scc_uart_t *) & cpmp->cp_dparam[proff_scc[scc_index]];
-
- rbdf = (cbd_t *) & cpmp->cp_dpmem[up->scc_genscc.scc_rbase];
-
- /* Wait for character to show up.
- */
- buf = (unsigned char *) rbdf->cbd_bufaddr;
-#if 0
- while (rbdf->cbd_sc & BD_SC_EMPTY);
-#else
- for (i = 100; i > 0; i--) {
- if (!(rbdf->cbd_sc & BD_SC_EMPTY))
- break;
- udelay (1000);
- }
-
- if (i == 0)
- return -1;
-#endif
- c = *buf;
- rbdf->cbd_sc |= BD_SC_EMPTY;
-
- return (c);
-}
-
- /*
- * Test routines
- */
-
-static int test_ctlr (int ctlr, int index)
-{
- int res = -1;
- char test_str[] = "*** UART Test String ***\r\n";
- int i;
-
- ctlr_proc[ctlr].init (index);
-
- for (i = 0; i < sizeof (test_str) - 1; i++) {
- ctlr_proc[ctlr].putc (index, test_str[i]);
- if (ctlr_proc[ctlr].getc (index) != test_str[i])
- goto Done;
- }
-
- res = 0;
-
-Done:
- ctlr_proc[ctlr].halt (index);
-
- if (res != 0) {
- post_log ("uart %s%d test failed\n",
- ctlr_name[ctlr], index + 1);
- }
-
- return res;
-}
-
-int uart_post_test (int flags)
-{
- int res = 0;
- int i;
-
- ctlr_proc[CTLR_SMC].init = smc_init;
- ctlr_proc[CTLR_SMC].halt = smc_halt;
- ctlr_proc[CTLR_SMC].putc = smc_putc;
- ctlr_proc[CTLR_SMC].getc = smc_getc;
-
- ctlr_proc[CTLR_SCC].init = scc_init;
- ctlr_proc[CTLR_SCC].halt = scc_halt;
- ctlr_proc[CTLR_SCC].putc = scc_putc;
- ctlr_proc[CTLR_SCC].getc = scc_getc;
-
- for (i = 0; i < ARRAY_SIZE(ctlr_list); i++) {
- if (test_ctlr (ctlr_list[i][0], ctlr_list[i][1]) != 0) {
- res = -1;
- }
- }
-
-#if !defined(CONFIG_8xx_CONS_NONE)
- serial_reinit_all ();
-#endif
-
- return res;
-}
-
-#endif /* CONFIG_POST & CONFIG_SYS_POST_UART */
projects / u-boot / blobdiff