diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/boot/cpm-serial.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/boot/cpm-serial.c | 294 |
1 files changed, 0 insertions, 294 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/boot/cpm-serial.c b/ANDROID_3.4.5/arch/powerpc/boot/cpm-serial.c deleted file mode 100644 index 19dc15ab..00000000 --- a/ANDROID_3.4.5/arch/powerpc/boot/cpm-serial.c +++ /dev/null @@ -1,294 +0,0 @@ -/* - * CPM serial console support. - * - * Copyright 2007 Freescale Semiconductor, Inc. - * Author: Scott Wood <scottwood@freescale.com> - * - * It is assumed that the firmware (or the platform file) has already set - * up the port. - */ - -#include "types.h" -#include "io.h" -#include "ops.h" -#include "page.h" - -struct cpm_scc { - u32 gsmrl; - u32 gsmrh; - u16 psmr; - u8 res1[2]; - u16 todr; - u16 dsr; - u16 scce; - u8 res2[2]; - u16 sccm; - u8 res3; - u8 sccs; - u8 res4[8]; -}; - -struct cpm_smc { - u8 res1[2]; - u16 smcmr; - u8 res2[2]; - u8 smce; - u8 res3[3]; - u8 smcm; - u8 res4[5]; -}; - -struct cpm_param { - u16 rbase; - u16 tbase; - u8 rfcr; - u8 tfcr; - u16 mrblr; - u32 rstate; - u8 res1[4]; - u16 rbptr; - u8 res2[6]; - u32 tstate; - u8 res3[4]; - u16 tbptr; - u8 res4[6]; - u16 maxidl; - u16 idlc; - u16 brkln; - u16 brkec; - u16 brkcr; - u16 rmask; - u8 res5[4]; -}; - -struct cpm_bd { - u16 sc; /* Status and Control */ - u16 len; /* Data length in buffer */ - u8 *addr; /* Buffer address in host memory */ -}; - -static void *cpcr; -static struct cpm_param *param; -static struct cpm_smc *smc; -static struct cpm_scc *scc; -static struct cpm_bd *tbdf, *rbdf; -static u32 cpm_cmd; -static void *cbd_addr; -static u32 cbd_offset; - -static void (*do_cmd)(int op); -static void (*enable_port)(void); -static void (*disable_port)(void); - -#define CPM_CMD_STOP_TX 4 -#define CPM_CMD_RESTART_TX 6 -#define CPM_CMD_INIT_RX_TX 0 - -static void cpm1_cmd(int op) -{ - while (in_be16(cpcr) & 1) - ; - - out_be16(cpcr, (op << 8) | cpm_cmd | 1); - - while (in_be16(cpcr) & 1) - ; -} - -static void cpm2_cmd(int op) -{ - while (in_be32(cpcr) & 0x10000) - ; - - out_be32(cpcr, op | cpm_cmd | 0x10000); - - while (in_be32(cpcr) & 0x10000) - ; -} - -static void smc_disable_port(void) -{ - do_cmd(CPM_CMD_STOP_TX); - out_be16(&smc->smcmr, in_be16(&smc->smcmr) & ~3); -} - -static void scc_disable_port(void) -{ - do_cmd(CPM_CMD_STOP_TX); - out_be32(&scc->gsmrl, in_be32(&scc->gsmrl) & ~0x30); -} - -static void smc_enable_port(void) -{ - out_be16(&smc->smcmr, in_be16(&smc->smcmr) | 3); - do_cmd(CPM_CMD_RESTART_TX); -} - -static void scc_enable_port(void) -{ - out_be32(&scc->gsmrl, in_be32(&scc->gsmrl) | 0x30); - do_cmd(CPM_CMD_RESTART_TX); -} - -static int cpm_serial_open(void) -{ - disable_port(); - - out_8(¶m->rfcr, 0x10); - out_8(¶m->tfcr, 0x10); - out_be16(¶m->mrblr, 1); - out_be16(¶m->maxidl, 0); - out_be16(¶m->brkec, 0); - out_be16(¶m->brkln, 0); - out_be16(¶m->brkcr, 0); - - rbdf = cbd_addr; - rbdf->addr = (u8 *)rbdf - 1; - rbdf->sc = 0xa000; - rbdf->len = 1; - - tbdf = rbdf + 1; - tbdf->addr = (u8 *)rbdf - 2; - tbdf->sc = 0x2000; - tbdf->len = 1; - - sync(); - out_be16(¶m->rbase, cbd_offset); - out_be16(¶m->tbase, cbd_offset + sizeof(struct cpm_bd)); - - do_cmd(CPM_CMD_INIT_RX_TX); - - enable_port(); - return 0; -} - -static void cpm_serial_putc(unsigned char c) -{ - while (tbdf->sc & 0x8000) - barrier(); - - sync(); - - tbdf->addr[0] = c; - eieio(); - tbdf->sc |= 0x8000; -} - -static unsigned char cpm_serial_tstc(void) -{ - barrier(); - return !(rbdf->sc & 0x8000); -} - -static unsigned char cpm_serial_getc(void) -{ - unsigned char c; - - while (!cpm_serial_tstc()) - ; - - sync(); - c = rbdf->addr[0]; - eieio(); - rbdf->sc |= 0x8000; - - return c; -} - -int cpm_console_init(void *devp, struct serial_console_data *scdp) -{ - void *vreg[2]; - u32 reg[2]; - int is_smc = 0, is_cpm2 = 0; - void *parent, *muram; - void *muram_addr; - unsigned long muram_offset, muram_size; - - if (dt_is_compatible(devp, "fsl,cpm1-smc-uart")) { - is_smc = 1; - } else if (dt_is_compatible(devp, "fsl,cpm2-scc-uart")) { - is_cpm2 = 1; - } else if (dt_is_compatible(devp, "fsl,cpm2-smc-uart")) { - is_cpm2 = 1; - is_smc = 1; - } - - if (is_smc) { - enable_port = smc_enable_port; - disable_port = smc_disable_port; - } else { - enable_port = scc_enable_port; - disable_port = scc_disable_port; - } - - if (is_cpm2) - do_cmd = cpm2_cmd; - else - do_cmd = cpm1_cmd; - - if (getprop(devp, "fsl,cpm-command", &cpm_cmd, 4) < 4) - return -1; - - if (dt_get_virtual_reg(devp, vreg, 2) < 2) - return -1; - - if (is_smc) - smc = vreg[0]; - else - scc = vreg[0]; - - param = vreg[1]; - - parent = get_parent(devp); - if (!parent) - return -1; - - if (dt_get_virtual_reg(parent, &cpcr, 1) < 1) - return -1; - - muram = finddevice("/soc/cpm/muram/data"); - if (!muram) - return -1; - - /* For bootwrapper-compatible device trees, we assume that the first - * entry has at least 128 bytes, and that #address-cells/#data-cells - * is one for both parent and child. - */ - - if (dt_get_virtual_reg(muram, &muram_addr, 1) < 1) - return -1; - - if (getprop(muram, "reg", reg, 8) < 8) - return -1; - - muram_offset = reg[0]; - muram_size = reg[1]; - - /* Store the buffer descriptors at the end of the first muram chunk. - * For SMC ports on CPM2-based platforms, relocate the parameter RAM - * just before the buffer descriptors. - */ - - cbd_offset = muram_offset + muram_size - 2 * sizeof(struct cpm_bd); - - if (is_cpm2 && is_smc) { - u16 *smc_base = (u16 *)param; - u16 pram_offset; - - pram_offset = cbd_offset - 64; - pram_offset = _ALIGN_DOWN(pram_offset, 64); - - disable_port(); - out_be16(smc_base, pram_offset); - param = muram_addr - muram_offset + pram_offset; - } - - cbd_addr = muram_addr - muram_offset + cbd_offset; - - scdp->open = cpm_serial_open; - scdp->putc = cpm_serial_putc; - scdp->getc = cpm_serial_getc; - scdp->tstc = cpm_serial_tstc; - - return 0; -} |