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-rw-r--r--arch/powerpc/boot/prpmc2800.c577
1 files changed, 577 insertions, 0 deletions
diff --git a/arch/powerpc/boot/prpmc2800.c b/arch/powerpc/boot/prpmc2800.c
new file mode 100644
index 00000000000..f428bac10d4
--- /dev/null
+++ b/arch/powerpc/boot/prpmc2800.c
@@ -0,0 +1,577 @@
+/*
+ * Motorola ECC prpmc280/f101 & prpmc2800/f101e platform code.
+ *
+ * Author: Mark A. Greer <mgreer@mvista.com>
+ *
+ * 2007 (c) MontaVista, Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "elf.h"
+#include "page.h"
+#include "string.h"
+#include "stdio.h"
+#include "io.h"
+#include "ops.h"
+#include "gunzip_util.h"
+#include "mv64x60.h"
+
+extern char _end[];
+extern char _vmlinux_start[], _vmlinux_end[];
+extern char _dtb_start[], _dtb_end[];
+
+extern void udelay(long delay);
+
+#define KB 1024U
+#define MB (KB*KB)
+#define GB (KB*MB)
+#define MHz (1000U*1000U)
+#define GHz (1000U*MHz)
+
+#define BOARD_MODEL "PrPMC2800"
+#define BOARD_MODEL_MAX 32 /* max strlen(BOARD_MODEL) + 1 */
+
+#define EEPROM2_ADDR 0xa4
+#define EEPROM3_ADDR 0xa8
+
+BSS_STACK(16*KB);
+
+static u8 *bridge_base;
+
+typedef enum {
+ BOARD_MODEL_PRPMC280,
+ BOARD_MODEL_PRPMC2800,
+} prpmc2800_board_model;
+
+typedef enum {
+ BRIDGE_TYPE_MV64360,
+ BRIDGE_TYPE_MV64362,
+} prpmc2800_bridge_type;
+
+struct prpmc2800_board_info {
+ prpmc2800_board_model model;
+ char variant;
+ prpmc2800_bridge_type bridge_type;
+ u8 subsys0;
+ u8 subsys1;
+ u8 vpd4;
+ u8 vpd4_mask;
+ u32 core_speed;
+ u32 mem_size;
+ u32 boot_flash;
+ u32 user_flash;
+};
+
+static struct prpmc2800_board_info prpmc2800_board_info[] = {
+ {
+ .model = BOARD_MODEL_PRPMC280,
+ .variant = 'a',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xff,
+ .subsys1 = 0xff,
+ .vpd4 = 0x00,
+ .vpd4_mask = 0x0f,
+ .core_speed = 1*GHz,
+ .mem_size = 512*MB,
+ .boot_flash = 1*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC280,
+ .variant = 'b',
+ .bridge_type = BRIDGE_TYPE_MV64362,
+ .subsys0 = 0xff,
+ .subsys1 = 0xff,
+ .vpd4 = 0x01,
+ .vpd4_mask = 0x0f,
+ .core_speed = 1*GHz,
+ .mem_size = 512*MB,
+ .boot_flash = 0,
+ .user_flash = 0,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC280,
+ .variant = 'c',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xff,
+ .subsys1 = 0xff,
+ .vpd4 = 0x02,
+ .vpd4_mask = 0x0f,
+ .core_speed = 733*MHz,
+ .mem_size = 512*MB,
+ .boot_flash = 1*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC280,
+ .variant = 'd',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xff,
+ .subsys1 = 0xff,
+ .vpd4 = 0x03,
+ .vpd4_mask = 0x0f,
+ .core_speed = 1*GHz,
+ .mem_size = 1*GB,
+ .boot_flash = 1*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC280,
+ .variant = 'e',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xff,
+ .subsys1 = 0xff,
+ .vpd4 = 0x04,
+ .vpd4_mask = 0x0f,
+ .core_speed = 1*GHz,
+ .mem_size = 512*MB,
+ .boot_flash = 1*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC280,
+ .variant = 'f',
+ .bridge_type = BRIDGE_TYPE_MV64362,
+ .subsys0 = 0xff,
+ .subsys1 = 0xff,
+ .vpd4 = 0x05,
+ .vpd4_mask = 0x0f,
+ .core_speed = 733*MHz,
+ .mem_size = 128*MB,
+ .boot_flash = 1*MB,
+ .user_flash = 0,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC280,
+ .variant = 'g',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xff,
+ .subsys1 = 0xff,
+ .vpd4 = 0x06,
+ .vpd4_mask = 0x0f,
+ .core_speed = 1*GHz,
+ .mem_size = 256*MB,
+ .boot_flash = 1*MB,
+ .user_flash = 0,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC280,
+ .variant = 'h',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xff,
+ .subsys1 = 0xff,
+ .vpd4 = 0x07,
+ .vpd4_mask = 0x0f,
+ .core_speed = 1*GHz,
+ .mem_size = 1*GB,
+ .boot_flash = 1*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC2800,
+ .variant = 'a',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xb2,
+ .subsys1 = 0x8c,
+ .vpd4 = 0x00,
+ .vpd4_mask = 0x00,
+ .core_speed = 1*GHz,
+ .mem_size = 512*MB,
+ .boot_flash = 2*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC2800,
+ .variant = 'b',
+ .bridge_type = BRIDGE_TYPE_MV64362,
+ .subsys0 = 0xb2,
+ .subsys1 = 0x8d,
+ .vpd4 = 0x00,
+ .vpd4_mask = 0x00,
+ .core_speed = 1*GHz,
+ .mem_size = 512*MB,
+ .boot_flash = 0,
+ .user_flash = 0,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC2800,
+ .variant = 'c',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xb2,
+ .subsys1 = 0x8e,
+ .vpd4 = 0x00,
+ .vpd4_mask = 0x00,
+ .core_speed = 733*MHz,
+ .mem_size = 512*MB,
+ .boot_flash = 2*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC2800,
+ .variant = 'd',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xb2,
+ .subsys1 = 0x8f,
+ .vpd4 = 0x00,
+ .vpd4_mask = 0x00,
+ .core_speed = 1*GHz,
+ .mem_size = 1*GB,
+ .boot_flash = 2*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC2800,
+ .variant = 'e',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xa2,
+ .subsys1 = 0x8a,
+ .vpd4 = 0x00,
+ .vpd4_mask = 0x00,
+ .core_speed = 1*GHz,
+ .mem_size = 512*MB,
+ .boot_flash = 2*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC2800,
+ .variant = 'f',
+ .bridge_type = BRIDGE_TYPE_MV64362,
+ .subsys0 = 0xa2,
+ .subsys1 = 0x8b,
+ .vpd4 = 0x00,
+ .vpd4_mask = 0x00,
+ .core_speed = 733*MHz,
+ .mem_size = 128*MB,
+ .boot_flash = 2*MB,
+ .user_flash = 0,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC2800,
+ .variant = 'g',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xa2,
+ .subsys1 = 0x8c,
+ .vpd4 = 0x00,
+ .vpd4_mask = 0x00,
+ .core_speed = 1*GHz,
+ .mem_size = 2*GB,
+ .boot_flash = 2*MB,
+ .user_flash = 64*MB,
+ },
+ {
+ .model = BOARD_MODEL_PRPMC2800,
+ .variant = 'h',
+ .bridge_type = BRIDGE_TYPE_MV64360,
+ .subsys0 = 0xa2,
+ .subsys1 = 0x8d,
+ .vpd4 = 0x00,
+ .vpd4_mask = 0x00,
+ .core_speed = 733*MHz,
+ .mem_size = 1*GB,
+ .boot_flash = 2*MB,
+ .user_flash = 64*MB,
+ },
+};
+
+static struct prpmc2800_board_info *prpmc2800_get_board_info(u8 *vpd)
+{
+ struct prpmc2800_board_info *bip;
+ int i;
+
+ for (i=0,bip=prpmc2800_board_info; i<ARRAY_SIZE(prpmc2800_board_info);
+ i++,bip++)
+ if ((vpd[0] == bip->subsys0) && (vpd[1] == bip->subsys1)
+ && ((vpd[4] & bip->vpd4_mask) == bip->vpd4))
+ return bip;
+
+ return NULL;
+}
+
+/* Get VPD from i2c eeprom 2, then match it to a board info entry */
+static struct prpmc2800_board_info *prpmc2800_get_bip(void)
+{
+ struct prpmc2800_board_info *bip;
+ u8 vpd[5];
+ int rc;
+
+ if (mv64x60_i2c_open())
+ fatal("Error: Can't open i2c device\n\r");
+
+ /* Get VPD from i2c eeprom-2 */
+ memset(vpd, 0, sizeof(vpd));
+ rc = mv64x60_i2c_read(EEPROM2_ADDR, vpd, 0x1fde, 2, sizeof(vpd));
+ if (rc < 0)
+ fatal("Error: Couldn't read eeprom2\n\r");
+ mv64x60_i2c_close();
+
+ /* Get board type & related info */
+ bip = prpmc2800_get_board_info(vpd);
+ if (bip == NULL) {
+ printf("Error: Unsupported board or corrupted VPD:\n\r");
+ printf(" 0x%x 0x%x 0x%x 0x%x 0x%x\n\r",
+ vpd[0], vpd[1], vpd[2], vpd[3], vpd[4]);
+ printf("Using device tree defaults...\n\r");
+ }
+
+ return bip;
+}
+
+static void prpmc2800_bridge_setup(u32 mem_size)
+{
+ u32 i, v[12], enables, acc_bits;
+ u32 pci_base_hi, pci_base_lo, size, buf[2];
+ unsigned long cpu_base;
+ int rc;
+ void *devp;
+ u8 *bridge_pbase, is_coherent;
+ struct mv64x60_cpu2pci_win *tbl;
+
+ bridge_pbase = mv64x60_get_bridge_pbase();
+ is_coherent = mv64x60_is_coherent();
+
+ if (is_coherent)
+ acc_bits = MV64x60_PCI_ACC_CNTL_SNOOP_WB
+ | MV64x60_PCI_ACC_CNTL_SWAP_NONE
+ | MV64x60_PCI_ACC_CNTL_MBURST_32_BYTES
+ | MV64x60_PCI_ACC_CNTL_RDSIZE_32_BYTES;
+ else
+ acc_bits = MV64x60_PCI_ACC_CNTL_SNOOP_NONE
+ | MV64x60_PCI_ACC_CNTL_SWAP_NONE
+ | MV64x60_PCI_ACC_CNTL_MBURST_128_BYTES
+ | MV64x60_PCI_ACC_CNTL_RDSIZE_256_BYTES;
+
+ mv64x60_config_ctlr_windows(bridge_base, bridge_pbase, is_coherent);
+ mv64x60_config_pci_windows(bridge_base, bridge_pbase, 0, 0, mem_size,
+ acc_bits);
+
+ /* Get the cpu -> pci i/o & mem mappings from the device tree */
+ devp = finddevice("/mv64x60/pci@80000000");
+ if (devp == NULL)
+ fatal("Error: Missing /mv64x60/pci@80000000"
+ " device tree node\n\r");
+
+ rc = getprop(devp, "ranges", v, sizeof(v));
+ if (rc != sizeof(v))
+ fatal("Error: Can't find /mv64x60/pci@80000000/ranges"
+ " property\n\r");
+
+ /* Get the cpu -> pci i/o & mem mappings from the device tree */
+ devp = finddevice("/mv64x60");
+ if (devp == NULL)
+ fatal("Error: Missing /mv64x60 device tree node\n\r");
+
+ enables = in_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE));
+ enables |= 0x0007fe00; /* Disable all cpu->pci windows */
+ out_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE), enables);
+
+ for (i=0; i<12; i+=6) {
+ switch (v[i] & 0xff000000) {
+ case 0x01000000: /* PCI I/O Space */
+ tbl = mv64x60_cpu2pci_io;
+ break;
+ case 0x02000000: /* PCI MEM Space */
+ tbl = mv64x60_cpu2pci_mem;
+ break;
+ default:
+ continue;
+ }
+
+ pci_base_hi = v[i+1];
+ pci_base_lo = v[i+2];
+ cpu_base = v[i+3];
+ size = v[i+5];
+
+ buf[0] = cpu_base;
+ buf[1] = size;
+
+ if (!dt_xlate_addr(devp, buf, sizeof(buf), &cpu_base))
+ fatal("Error: Can't translate PCI address 0x%x\n\r",
+ (u32)cpu_base);
+
+ mv64x60_config_cpu2pci_window(bridge_base, 0, pci_base_hi,
+ pci_base_lo, cpu_base, size, tbl);
+ }
+
+ enables &= ~0x00000600; /* Enable cpu->pci0 i/o, cpu->pci0 mem0 */
+ out_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE), enables);
+}
+
+static void prpmc2800_fixups(void)
+{
+ u32 v[2], l, mem_size;
+ int rc;
+ void *devp;
+ char model[BOARD_MODEL_MAX];
+ struct prpmc2800_board_info *bip;
+
+ bip = prpmc2800_get_bip(); /* Get board info based on VPD */
+
+ mem_size = (bip) ? bip->mem_size : mv64x60_get_mem_size(bridge_base);
+ prpmc2800_bridge_setup(mem_size); /* Do necessary bridge setup */
+
+ /* If the VPD doesn't match what we know about, just use the
+ * defaults already in the device tree.
+ */
+ if (!bip)
+ return;
+
+ /* Know the board type so override device tree defaults */
+ /* Set /model appropriately */
+ devp = finddevice("/");
+ if (devp == NULL)
+ fatal("Error: Missing '/' device tree node\n\r");
+ memset(model, 0, BOARD_MODEL_MAX);
+ strncpy(model, BOARD_MODEL, BOARD_MODEL_MAX - 2);
+ l = strlen(model);
+ if (bip->model == BOARD_MODEL_PRPMC280)
+ l--;
+ model[l++] = bip->variant;
+ model[l++] = '\0';
+ setprop(devp, "model", model, l);
+
+ /* Set /cpus/PowerPC,7447/clock-frequency */
+ devp = finddevice("/cpus/PowerPC,7447");
+ if (devp == NULL)
+ fatal("Error: Missing proper /cpus device tree node\n\r");
+ v[0] = bip->core_speed;
+ setprop(devp, "clock-frequency", &v[0], sizeof(v[0]));
+
+ /* Set /memory/reg size */
+ devp = finddevice("/memory");
+ if (devp == NULL)
+ fatal("Error: Missing /memory device tree node\n\r");
+ v[0] = 0;
+ v[1] = bip->mem_size;
+ setprop(devp, "reg", v, sizeof(v));
+
+ /* Update /mv64x60/model, if this is a mv64362 */
+ if (bip->bridge_type == BRIDGE_TYPE_MV64362) {
+ devp = finddevice("/mv64x60");
+ if (devp == NULL)
+ fatal("Error: Missing /mv64x60 device tree node\n\r");
+ setprop(devp, "model", "mv64362", strlen("mv64362") + 1);
+ }
+
+ /* Set User FLASH size */
+ devp = finddevice("/mv64x60/flash@a0000000");
+ if (devp == NULL)
+ fatal("Error: Missing User FLASH device tree node\n\r");
+ rc = getprop(devp, "reg", v, sizeof(v));
+ if (rc != sizeof(v))
+ fatal("Error: Can't find User FLASH reg property\n\r");
+ v[1] = bip->user_flash;
+ setprop(devp, "reg", v, sizeof(v));
+}
+
+#define MV64x60_MPP_CNTL_0 0xf000
+#define MV64x60_MPP_CNTL_2 0xf008
+#define MV64x60_GPP_IO_CNTL 0xf100
+#define MV64x60_GPP_LEVEL_CNTL 0xf110
+#define MV64x60_GPP_VALUE_SET 0xf118
+
+static void prpmc2800_reset(void)
+{
+ u32 temp;
+
+ udelay(5000000);
+
+ if (bridge_base != 0) {
+ temp = in_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_0));
+ temp &= 0xFFFF0FFF;
+ out_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_0), temp);
+
+ temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL));
+ temp |= 0x00000004;
+ out_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL), temp);
+
+ temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL));
+ temp |= 0x00000004;
+ out_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL), temp);
+
+ temp = in_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_2));
+ temp &= 0xFFFF0FFF;
+ out_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_2), temp);
+
+ temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL));
+ temp |= 0x00080000;
+ out_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL), temp);
+
+ temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL));
+ temp |= 0x00080000;
+ out_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL), temp);
+
+ out_le32((u32 *)(bridge_base + MV64x60_GPP_VALUE_SET),
+ 0x00080004);
+ }
+
+ for (;;);
+}
+
+#define HEAP_SIZE (16*MB)
+static struct gunzip_state gzstate;
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7)
+{
+ struct elf_info ei;
+ char *heap_start, *dtb;
+ int dt_size = _dtb_end - _dtb_start;
+ void *vmlinuz_addr = _vmlinux_start;
+ unsigned long vmlinuz_size = _vmlinux_end - _vmlinux_start;
+ char elfheader[256];
+
+ if (dt_size <= 0) /* No fdt */
+ exit();
+
+ /*
+ * Start heap after end of the kernel (after decompressed to
+ * address 0) or the end of the zImage, whichever is higher.
+ * That's so things allocated by simple_alloc won't overwrite
+ * any part of the zImage and the kernel won't overwrite the dtb
+ * when decompressed & relocated.
+ */
+ gunzip_start(&gzstate, vmlinuz_addr, vmlinuz_size);
+ gunzip_exactly(&gzstate, elfheader, sizeof(elfheader));
+
+ if (!parse_elf32(elfheader, &ei))
+ exit();
+
+ heap_start = (char *)(ei.memsize + ei.elfoffset); /* end of kernel*/
+ heap_start = max(heap_start, (char *)_end); /* end of zImage */
+
+ if ((unsigned)simple_alloc_init(heap_start, HEAP_SIZE, 2*KB, 16)
+ > (128*MB))
+ exit();
+
+ /* Relocate dtb to safe area past end of zImage & kernel */
+ dtb = malloc(dt_size);
+ if (!dtb)
+ exit();
+ memmove(dtb, _dtb_start, dt_size);
+ if (ft_init(dtb, dt_size, 16))
+ exit();
+
+ bridge_base = mv64x60_get_bridge_base();
+
+ platform_ops.fixups = prpmc2800_fixups;
+ platform_ops.exit = prpmc2800_reset;
+
+ if (serial_console_init() < 0)
+ exit();
+}
+
+/* _zimage_start called very early--need to turn off external interrupts */
+asm (" .globl _zimage_start\n\
+ _zimage_start:\n\
+ mfmsr 10\n\
+ rlwinm 10,10,0,~(1<<15) /* Clear MSR_EE */\n\
+ sync\n\
+ mtmsr 10\n\
+ isync\n\
+ b _zimage_start_lib\n\
+");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-07 13:36:13 +0000