[U-Boot-Users] [PATCH] MPC5121e ADS PCI support
John Rigby
jrigby at freescale.com
Mon Feb 25 23:30:21 CET 2008
Adds PCI support for MPC5121 to u-boot 1.3.2rc1
Tested with drivers/net/rtl8139.c
It also works with linux kernel but not completely tested
because pci interrupts on my board are not quite working.
Signed-off-by: John Rigby <jrigby at freescale.com>
---
board/ads5121/Makefile | 2 +-
board/ads5121/ads5121.c | 1 +
board/ads5121/pci.c | 216 +++++++++++++++++++++++++++++++++++++++++
cpu/mpc512x/speed.c | 21 +++-
include/asm-ppc/global_data.h | 1 +
include/asm-ppc/immap_512x.h | 61 +++++++++++-
include/configs/ads5121.h | 30 ++++++-
include/mpc512x.h | 84 ++++++++++++++++
8 files changed, 403 insertions(+), 13 deletions(-)
create mode 100644 board/ads5121/pci.c
diff --git a/board/ads5121/Makefile b/board/ads5121/Makefile
index cd8148c..f15a88b 100644
--- a/board/ads5121/Makefile
+++ b/board/ads5121/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := $(BOARD).o
+COBJS := $(BOARD).o pci.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
diff --git a/board/ads5121/ads5121.c b/board/ads5121/ads5121.c
index 462f41d..8629b03 100644
--- a/board/ads5121/ads5121.c
+++ b/board/ads5121/ads5121.c
@@ -34,6 +34,7 @@
CLOCK_SCCR1_PSCFIFO_EN | \
CLOCK_SCCR1_DDR_EN | \
CLOCK_SCCR1_FEC_EN | \
+ CLOCK_SCCR1_PCI_EN | \
CLOCK_SCCR1_TPR_EN)
#define SCCR2_CLOCKS_EN (CLOCK_SCCR2_MEM_EN | \
diff --git a/board/ads5121/pci.c b/board/ads5121/pci.c
new file mode 100644
index 0000000..8868171
--- /dev/null
+++ b/board/ads5121/pci.c
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) Freescale Semiconductor, Inc. 2006, 2007. All rights reserved.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_PCI
+
+#include <asm/mmu.h>
+#include <asm/global_data.h>
+#include <pci.h>
+#if defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#include <fdt_support.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* System RAM mapped to PCI space */
+#define CONFIG_PCI_SYS_MEM_BUS CFG_SDRAM_BASE
+#define CONFIG_PCI_SYS_MEM_PHYS CFG_SDRAM_BASE
+
+static struct pci_controller pci_hose;
+
+
+/**************************************************************************
+ * pci_init_board()
+ *
+ */
+void
+pci_init_board(void)
+{
+ volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile law512x_t *pci_law;
+ volatile pot512x_t *pci_pot;
+ volatile pcictrl512x_t *pci_ctrl;
+ volatile pciconf512x_t *pci_conf;
+ u16 reg16;
+ u32 reg32;
+ u32 dev;
+ struct pci_controller *hose;
+
+ /* Set PCI divider for 33MHz */
+ reg32 = immr->clk.scfr[0];
+ reg32 &= ~(SCFR1_PCI_DIV_MASK);
+ reg32 |= SCFR1_PCI_DIV << SCFR1_PCI_DIV_SHIFT;
+ immr->clk.scfr[0] = reg32;
+
+ pci_law = immr->sysconf.pcilaw;
+ pci_pot = immr->ios.pot;
+ pci_ctrl = &immr->pci_ctrl;
+ pci_conf = &immr->pci_conf;
+
+ hose = &pci_hose;
+
+ /*
+ * Release PCI RST Output signal
+ */
+ pci_ctrl->gcr = 0;
+ udelay(2000);
+ pci_ctrl->gcr = 1;
+
+ /* We need to wait at least a 1sec based on PCI specs */
+ {
+ int i;
+
+ for (i = 0; i < 1000; i++)
+ udelay(1000);
+ }
+
+ /*
+ * Configure PCI Local Access Windows
+ */
+ pci_law[0].bar = CFG_PCI_MEM_PHYS & LAWBAR_BAR;
+ pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_512M;
+
+ pci_law[1].bar = CFG_PCI_IO_PHYS & LAWBAR_BAR;
+ pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_16M;
+
+ /*
+ * Configure PCI Outbound Translation Windows
+ */
+
+ /* PCI mem space - prefetch */
+ pci_pot[0].potar = (CFG_PCI_MEM_BASE >> 12) & POTAR_TA_MASK;
+ pci_pot[0].pobar = (CFG_PCI_MEM_PHYS >> 12) & POBAR_BA_MASK;
+ pci_pot[0].pocmr = POCMR_EN | POCMR_PRE | POCMR_CM_256M;
+
+ /* PCI IO space */
+ pci_pot[1].potar = (CFG_PCI_IO_BASE >> 12) & POTAR_TA_MASK;
+ pci_pot[1].pobar = (CFG_PCI_IO_PHYS >> 12) & POBAR_BA_MASK;
+ pci_pot[1].pocmr = POCMR_EN | POCMR_IO | POCMR_CM_16M;
+
+ /* PCI mmio - non-prefetch mem space */
+ pci_pot[2].potar = (CFG_PCI_MMIO_BASE >> 12) & POTAR_TA_MASK;
+ pci_pot[2].pobar = (CFG_PCI_MMIO_PHYS >> 12) & POBAR_BA_MASK;
+ pci_pot[2].pocmr = POCMR_EN | POCMR_CM_256M;
+
+ /*
+ * Configure PCI Inbound Translation Windows
+ */
+
+ /* we need RAM mapped to PCI space for the devices to
+ * access main memory */
+ pci_ctrl[0].pitar1 = 0x0;
+ pci_ctrl[0].pibar1 = 0x0;
+ pci_ctrl[0].piebar1 = 0x0;
+ pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
+ PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1);
+
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+
+ /* PCI memory prefetch space */
+ pci_set_region(hose->regions + 0,
+ CFG_PCI_MEM_BASE,
+ CFG_PCI_MEM_PHYS,
+ CFG_PCI_MEM_SIZE,
+ PCI_REGION_MEM|PCI_REGION_PREFETCH);
+
+ /* PCI memory space */
+ pci_set_region(hose->regions + 1,
+ CFG_PCI_MMIO_BASE,
+ CFG_PCI_MMIO_PHYS,
+ CFG_PCI_MMIO_SIZE,
+ PCI_REGION_MEM);
+
+ /* PCI IO space */
+ pci_set_region(hose->regions + 2,
+ CFG_PCI_IO_BASE,
+ CFG_PCI_IO_PHYS,
+ CFG_PCI_IO_SIZE,
+ PCI_REGION_IO);
+
+ /* System memory space */
+ pci_set_region(hose->regions + 3,
+ CONFIG_PCI_SYS_MEM_BUS,
+ CONFIG_PCI_SYS_MEM_PHYS,
+ gd->ram_size,
+ PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+ hose->region_count = 4;
+
+ pci_setup_indirect(hose,
+ (CFG_IMMR + 0x8300),
+ (CFG_IMMR + 0x8304));
+
+ pci_register_hose(hose);
+
+ /*
+ * Write to Command register
+ */
+ reg16 = 0xff;
+ dev = PCI_BDF(hose->first_busno, 0, 0);
+ pci_hose_read_config_word(hose, dev, PCI_COMMAND, ®16);
+ reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+ pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
+
+ /*
+ * Clear non-reserved bits in status register.
+ */
+ pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
+ pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
+ pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
+
+#ifdef CONFIG_PCI_SCAN_SHOW
+ printf("PCI: Bus Dev VenId DevId Class Int\n");
+#endif
+ /*
+ * Hose scan.
+ */
+ hose->last_busno = pci_hose_scan(hose);
+}
+
+#if defined(CONFIG_OF_LIBFDT)
+void ft_pci_setup(void *blob, bd_t *bd)
+{
+ int nodeoffset;
+ int tmp[2];
+ const char *path;
+
+ nodeoffset = fdt_path_offset(blob, "/aliases");
+ if (nodeoffset >= 0) {
+ path = fdt_getprop(blob, nodeoffset, "pci", NULL);
+ if (path) {
+ tmp[0] = cpu_to_be32(pci_hose.first_busno);
+ tmp[1] = cpu_to_be32(pci_hose.last_busno);
+ do_fixup_by_path(blob, path, "bus-range",
+ &tmp, sizeof(tmp), 1);
+
+ tmp[0] = cpu_to_be32(gd->pci_clk);
+ do_fixup_by_path(blob, path, "clock-frequency",
+ &tmp, sizeof(tmp[0]), 1);
+ }
+ }
+}
+#endif /* CONFIG_OF_LIBFDT */
+#endif/* CONFIG_PCI */
diff --git a/cpu/mpc512x/speed.c b/cpu/mpc512x/speed.c
index 99e3495..cfaffb5 100644
--- a/cpu/mpc512x/speed.c
+++ b/cpu/mpc512x/speed.c
@@ -67,12 +67,14 @@ int get_clocks (void)
u8 cpmf;
u8 sys_div;
u8 ips_div;
+ u8 pci_div;
u32 ref_clk = CFG_MPC512X_CLKIN;
u32 spll;
u32 sys_clk;
u32 core_clk;
u32 csb_clk;
u32 ips_clk;
+ u32 pci_clk;
if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
return -1;
@@ -95,8 +97,16 @@ int get_clocks (void)
/* in case we cannot get a sane IPS divisor, fail gracefully */
ips_clk = 0;
}
+ pci_div = (im->clk.scfr[0] & SCFR1_PCI_DIV_MASK) >> SCFR1_PCI_DIV_SHIFT;
+ if (pci_div != 0) {
+ pci_clk = csb_clk / pci_div;
+ } else {
+ /* in case we cannot get a sane IPS divisor, fail gracefully */
+ pci_clk = 333333;
+ }
gd->ips_clk = ips_clk;
+ gd->pci_clk = pci_clk;
gd->csb_clk = csb_clk;
gd->cpu_clk = core_clk;
gd->bus_clk = csb_clk;
@@ -115,11 +125,12 @@ ulong get_bus_freq (ulong dummy)
int do_clocks (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
- printf ("Clock configuration:\n");
- printf (" CPU: %4d MHz\n", gd->cpu_clk / 1000000);
- printf (" Coherent System Bus: %4d MHz\n", gd->csb_clk / 1000000);
- printf (" IPS Bus: %4d MHz\n", gd->ips_clk / 1000000);
- printf (" DDR: %4d MHz\n", 2 * gd->csb_clk / 1000000);
+ printf("Clock configuration:\n");
+ printf(" CPU: %4d MHz\n", gd->cpu_clk / 1000000);
+ printf(" Coherent System Bus: %4d MHz\n", gd->csb_clk / 1000000);
+ printf(" IPS Bus: %4d MHz\n", gd->ips_clk / 1000000);
+ printf(" PCI: %4d MHz\n", gd->pci_clk / 1000000);
+ printf(" DDR: %4d MHz\n", 2 * gd->csb_clk / 1000000);
return 0;
}
diff --git a/include/asm-ppc/global_data.h b/include/asm-ppc/global_data.h
index f9a3d92..205f7ed 100644
--- a/include/asm-ppc/global_data.h
+++ b/include/asm-ppc/global_data.h
@@ -103,6 +103,7 @@ typedef struct global_data {
#if defined(CONFIG_MPC512X)
u32 ips_clk;
u32 csb_clk;
+ u32 pci_clk;
#endif /* CONFIG_MPC512X */
#if defined(CONFIG_MPC8220)
unsigned long bExtUart;
diff --git a/include/asm-ppc/immap_512x.h b/include/asm-ppc/immap_512x.h
index 23d10d4..cd90945 100644
--- a/include/asm-ppc/immap_512x.h
+++ b/include/asm-ppc/immap_512x.h
@@ -29,7 +29,7 @@
typedef struct law512x {
u32 bar; /* Base Addr Register */
u32 ar; /* Attributes Register */
-} law521x_t;
+} law512x_t;
/*
* System configuration registers
@@ -47,9 +47,9 @@ typedef struct sysconf512x {
u32 lpcs6aw; /* LP CS6 Access Window */
u32 lpcs7aw; /* LP CS7 Access Window */
u8 res1[0x1c];
- law521x_t pcilaw[3]; /* PCI Local Access Window 0-2 Registers */
+ law512x_t pcilaw[3]; /* PCI Local Access Window 0-2 Registers */
u8 res2[0x28];
- law521x_t ddrlaw; /* DDR Local Access Window */
+ law512x_t ddrlaw; /* DDR Local Access Window */
u8 res3[0x18];
u32 mbxbar; /* MBX Base Address */
u32 srambar; /* SRAM Base Address */
@@ -241,21 +241,70 @@ typedef struct dma512x {
* PCI Software Configuration Registers
*/
typedef struct pciconf512x {
- u8 fixme[0x80];
+ u32 config_address;
+ u32 config_data;
+ u32 int_ack;
+ u8 res[116];
} pciconf512x_t;
/*
+ * PCI Outbound Translation Register
+ */
+typedef struct pci_outbound_window {
+ u32 potar;
+ u8 res0[4];
+ u32 pobar;
+ u8 res1[4];
+ u32 pocmr;
+ u8 res2[4];
+} pot512x_t;
+
+/*
* Sequencer
*/
typedef struct ios512x {
- u8 fixme[0x100];
+ pot512x_t pot[6];
+ u8 res0[0x60];
+ u32 pmcr;
+ u8 res1[4];
+ u32 dtcr;
+ u8 res2[4];
} ios512x_t;
/*
* PCI Controller
*/
typedef struct pcictrl512x {
- u8 fixme[0x100];
+ u32 esr;
+ u32 ecdr;
+ u32 eer;
+ u32 eatcr;
+ u32 eacr;
+ u32 eeacr;
+ u32 edlcr;
+ u32 edhcr;
+ u32 gcr;
+ u32 ecr;
+ u32 gsr;
+ u8 res0[12];
+ u32 pitar2;
+ u8 res1[4];
+ u32 pibar2;
+ u32 piebar2;
+ u32 piwar2;
+ u8 res2[4];
+ u32 pitar1;
+ u8 res3[4];
+ u32 pibar1;
+ u32 piebar1;
+ u32 piwar1;
+ u8 res4[4];
+ u32 pitar0;
+ u8 res5[4];
+ u32 pibar0;
+ u8 res6[4];
+ u32 piwar0;
+ u8 res7[132];
} pcictrl512x_t;
diff --git a/include/configs/ads5121.h b/include/configs/ads5121.h
index 09c3140..ae469f8 100644
--- a/include/configs/ads5121.h
+++ b/include/configs/ads5121.h
@@ -34,6 +34,9 @@
* 0x3000_0000 - 0x3001_FFFF SRAM (128 KB)
* 0x8000_0000 - 0x803F_FFFF IMMR (4 MB)
* 0x8200_0000 - 0x8200_001F CPLD (32 B)
+ * 0x8400_0000 - 0x82FF_FFFF PCI I/O space (16 MB)
+ * 0xA000_0000 - 0xAFFF_FFFF PCI memory space (256 MB)
+ * 0xB000_0000 - 0xBFFF_FFFF PCI memory mapped I/O space (256 MB)
* 0xFC00_0000 - 0xFFFF_FFFF NOR Boot FLASH (64 MB)
*/
@@ -43,7 +46,7 @@
#define CONFIG_E300 1 /* E300 Family */
#define CONFIG_MPC512X 1 /* MPC512X family */
-#undef CONFIG_PCI
+#define CONFIG_PCI
#define CFG_MPC512X_CLKIN 66000000 /* in Hz */
@@ -217,6 +220,31 @@
#define CFG_PROMPT_HUSH_PS2 "> "
#endif
+/*
+ * PCI
+ */
+#ifdef CONFIG_PCI
+
+/*
+ * General PCI
+ */
+#define CFG_PCI_MEM_BASE 0xA0000000
+#define CFG_PCI_MEM_PHYS CFG_PCI_MEM_BASE
+#define CFG_PCI_MEM_SIZE 0x10000000 /* 256M */
+#define CFG_PCI_MMIO_BASE (CFG_PCI_MEM_BASE + CFG_PCI_MEM_SIZE)
+#define CFG_PCI_MMIO_PHYS CFG_PCI_MMIO_BASE
+#define CFG_PCI_MMIO_SIZE 0x10000000 /* 256M */
+#define CFG_PCI_IO_BASE 0x00000000
+#define CFG_PCI_IO_PHYS 0x84000000
+#define CFG_PCI_IO_SIZE 0x01000000 /* 16M */
+
+
+#define CONFIG_PCI_PNP /* do pci plug-and-play */
+
+#define CONFIG_PCI_SCAN_SHOW /* show pci devices on startup */
+
+#endif
+
/* I2C */
#define CONFIG_HARD_I2C /* I2C with hardware support */
#undef CONFIG_SOFT_I2C /* so disable bit-banged I2C */
diff --git a/include/mpc512x.h b/include/mpc512x.h
index b51cf78..b4cc2b9 100644
--- a/include/mpc512x.h
+++ b/include/mpc512x.h
@@ -46,6 +46,7 @@
#define LPCS6AW 0x003C
#define LPCA7AW 0x0040
#define SRAMBAR 0x00C4
+#define LAWBAR_BAR 0xFFFFF000 /* Base address mask */
#define LPC_OFFSET 0x10000
@@ -189,6 +190,10 @@
#define SCFR1_IPS_DIV_MASK 0x03800000
#define SCFR1_IPS_DIV_SHIFT 23
+#define SCFR1_PCI_DIV 0x6
+#define SCFR1_PCI_DIV_MASK 0x00700000
+#define SCFR1_PCI_DIV_SHIFT 20
+
/* SCFR2 System Clock Frequency Register 2
*/
#define SCFR2_SYS_DIV 0xFC000000
@@ -404,4 +409,83 @@
#define I2C_IF 0x02
#define I2C_RXAK 0x01
+/* POTAR - PCI Outbound Translation Address Register
+ */
+#define POTAR_TA_MASK 0x000fffff
+
+/* POBAR - PCI Outbound Base Address Register
+ */
+#define POBAR_BA_MASK 0x000fffff
+
+/* POCMR - PCI Outbound Comparision Mask Register
+ */
+#define POCMR_EN 0x80000000
+#define POCMR_IO 0x40000000 /* 0-memory space 1-I/O space */
+#define POCMR_PRE 0x20000000 /* prefetch enable */
+#define POCMR_SBS 0x00100000 /* special byte swap enable */
+#define POCMR_CM_MASK 0x000fffff
+#define POCMR_CM_4G 0x00000000
+#define POCMR_CM_2G 0x00080000
+#define POCMR_CM_1G 0x000C0000
+#define POCMR_CM_512M 0x000E0000
+#define POCMR_CM_256M 0x000F0000
+#define POCMR_CM_128M 0x000F8000
+#define POCMR_CM_64M 0x000FC000
+#define POCMR_CM_32M 0x000FE000
+#define POCMR_CM_16M 0x000FF000
+#define POCMR_CM_8M 0x000FF800
+#define POCMR_CM_4M 0x000FFC00
+#define POCMR_CM_2M 0x000FFE00
+#define POCMR_CM_1M 0x000FFF00
+#define POCMR_CM_512K 0x000FFF80
+#define POCMR_CM_256K 0x000FFFC0
+#define POCMR_CM_128K 0x000FFFE0
+#define POCMR_CM_64K 0x000FFFF0
+#define POCMR_CM_32K 0x000FFFF8
+#define POCMR_CM_16K 0x000FFFFC
+#define POCMR_CM_8K 0x000FFFFE
+#define POCMR_CM_4K 0x000FFFFF
+
+/* PITAR - PCI Inbound Translation Address Register
+ */
+#define PITAR_TA_MASK 0x000fffff
+
+/* PIBAR - PCI Inbound Base/Extended Address Register
+ */
+#define PIBAR_MASK 0xffffffff
+#define PIEBAR_EBA_MASK 0x000fffff
+
+/* PIWAR - PCI Inbound Windows Attributes Register
+ */
+#define PIWAR_EN 0x80000000
+#define PIWAR_SBS 0x40000000
+#define PIWAR_PF 0x20000000
+#define PIWAR_RTT_MASK 0x000f0000
+#define PIWAR_RTT_NO_SNOOP 0x00040000
+#define PIWAR_RTT_SNOOP 0x00050000
+#define PIWAR_WTT_MASK 0x0000f000
+#define PIWAR_WTT_NO_SNOOP 0x00004000
+#define PIWAR_WTT_SNOOP 0x00005000
+#define PIWAR_IWS_MASK 0x0000003F
+#define PIWAR_IWS_4K 0x0000000B
+#define PIWAR_IWS_8K 0x0000000C
+#define PIWAR_IWS_16K 0x0000000D
+#define PIWAR_IWS_32K 0x0000000E
+#define PIWAR_IWS_64K 0x0000000F
+#define PIWAR_IWS_128K 0x00000010
+#define PIWAR_IWS_256K 0x00000011
+#define PIWAR_IWS_512K 0x00000012
+#define PIWAR_IWS_1M 0x00000013
+#define PIWAR_IWS_2M 0x00000014
+#define PIWAR_IWS_4M 0x00000015
+#define PIWAR_IWS_8M 0x00000016
+#define PIWAR_IWS_16M 0x00000017
+#define PIWAR_IWS_32M 0x00000018
+#define PIWAR_IWS_64M 0x00000019
+#define PIWAR_IWS_128M 0x0000001A
+#define PIWAR_IWS_256M 0x0000001B
+#define PIWAR_IWS_512M 0x0000001C
+#define PIWAR_IWS_1G 0x0000001D
+#define PIWAR_IWS_2G 0x0000001E
+
#endif /* __MPC512X_H__ */
--
1.5.4
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