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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2023-05-03 09:20:15 +0200 |
|---|---|---|
| committer | Christophe Leroy <christophe.leroy@csgroup.eu> | 2023-05-05 07:26:53 +0200 |
| commit | 388cb1a10f091e494b837a8666d49866e9c7b1e2 (patch) | |
| tree | 0fe4b077a0e1070d083f2d4929780760246c2d4c | |
| parent | 14e64c18019ea5361e260bec2a56620c4fe918a1 (diff) | |
| download | u-boot-388cb1a10f091e494b837a8666d49866e9c7b1e2.zip u-boot-388cb1a10f091e494b837a8666d49866e9c7b1e2.tar.gz u-boot-388cb1a10f091e494b837a8666d49866e9c7b1e2.tar.bz2 | |
serial, mpc8xx: Take parameter RAM relocation into account
Instead of inhibiting parameter RAM relacation, take
into account the configured one.
It means INIT_TRX command cannot be used and must be done
manually as explained in the microcode patch application note.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
| -rw-r--r-- | drivers/serial/serial_mpc8xx.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/drivers/serial/serial_mpc8xx.c b/drivers/serial/serial_mpc8xx.c index beffc34..d82760c 100644 --- a/drivers/serial/serial_mpc8xx.c +++ b/drivers/serial/serial_mpc8xx.c @@ -83,6 +83,7 @@ static int serial_mpc8xx_probe(struct udevice *dev) immap_t __iomem *im = (immap_t __iomem *)CONFIG_SYS_IMMR; smc_t __iomem *sp; smc_uart_t __iomem *up; + u16 smc_rpbase; cpm8xx_t __iomem *cp = &(im->im_cpm); struct serialbuffer __iomem *rtx; @@ -90,8 +91,10 @@ static int serial_mpc8xx_probe(struct udevice *dev) sp = cp->cp_smc + SMC_INDEX; up = (smc_uart_t __iomem *)&cp->cp_dpmem[PROFF_SMC]; - /* Disable relocation */ - out_be16(&up->smc_rpbase, 0); + + smc_rpbase = in_be16(&up->smc_rpbase); + if (smc_rpbase) + up = (smc_uart_t __iomem *)&cp->cp_dpmem[smc_rpbase]; /* Disable transmitter/receiver. */ clrbits_be16(&sp->smc_smcmr, SMCMR_REN | SMCMR_TEN); @@ -154,15 +157,12 @@ static int serial_mpc8xx_probe(struct udevice *dev) out_be16(&up->smc_maxidl, CONFIG_SYS_MAXIDLE); out_be32(&rtx->rxindex, 0); - /* Initialize Tx/Rx parameters. */ - while (in_be16(&cp->cp_cpcr) & CPM_CR_FLG) /* wait if cp is busy */ - ; - - out_be16(&cp->cp_cpcr, - mk_cr_cmd(CPM_CR_CH_SMC, CPM_CR_INIT_TRX) | CPM_CR_FLG); - - while (in_be16(&cp->cp_cpcr) & CPM_CR_FLG) /* wait if cp is busy */ - ; + out_be32(&up->smc_rstate, 0); + out_be32(&up->smc_tstate, 0); + out_be16(&up->smc_rbptr, CPM_SERIAL_BASE); + out_be16(&up->smc_tbptr, CPM_SERIAL_BASE + sizeof(cbd_t)); + out_be16(&up->smc_brkcr, 1); + out_be16(&up->smc_brkec, 0); /* Enable transmitter/receiver. */ setbits_be16(&sp->smc_smcmr, SMCMR_REN | SMCMR_TEN); |