Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / board / amcc / ebony / flash.c

diff --git a/qemu/roms/u-boot/board/amcc/ebony/flash.c b/qemu/roms/u-boot/board/amcc/ebony/flash.c
new file mode 100644 (file)
index 0000000..5740a56
--- /dev/null
+++ b/qemu/roms/u-boot/board/amcc/ebony/flash.c
@@ -0,0 +1,155 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
+ * Add support for Am29F016D and dynamic switch setting.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+/*
+ * Modified 4/5/2001
+ * Wait for completion of each sector erase command issued
+ * 4/5/2001
+ * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
+ */
+
+#include <common.h>
+#include <asm/ppc4xx.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+#undef DEBUG
+#ifdef DEBUG
+#define DEBUGF(x...) printf(x)
+#else
+#define DEBUGF(x...)
+#endif                         /* DEBUG */
+
+#define     BOOT_SMALL_FLASH        32 /* 00100000 */
+#define     FLASH_ONBD_N            2  /* 00000010 */
+#define     FLASH_SRAM_SEL          1  /* 00000001 */
+
+#define     BOOT_SMALL_FLASH_VAL    4
+#define     FLASH_ONBD_N_VAL        2
+#define     FLASH_SRAM_SEL_VAL      1
+
+static unsigned long flash_addr_table[8][CONFIG_SYS_MAX_FLASH_BANKS] = {
+       {0xffc00000, 0xffe00000, 0xff880000},   /* 0:000: configuraton 3 */
+       {0xffc00000, 0xffe00000, 0xff800000},   /* 1:001: configuraton 4 */
+       {0xffc00000, 0xffe00000, 0x00000000},   /* 2:010: configuraton 7 */
+       {0xffc00000, 0xffe00000, 0x00000000},   /* 3:011: configuraton 8 */
+       {0xff800000, 0xffa00000, 0xfff80000},   /* 4:100: configuraton 1 */
+       {0xff800000, 0xffa00000, 0xfff00000},   /* 5:101: configuraton 2 */
+       {0xffc00000, 0xffe00000, 0x00000000},   /* 6:110: configuraton 5 */
+       {0xffc00000, 0xffe00000, 0x00000000}    /* 7:111: configuraton 6 */
+};
+
+/*
+ * include common flash code (for amcc boards)
+ */
+#include "../common/flash.c"
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size(vu_long * addr, flash_info_t * info);
+
+/*
+ * Override the weak default mapping function with a board specific one
+ */
+u32 flash_get_bank_size(int cs, int idx)
+{
+       u8 reg = in_8((void *)CONFIG_SYS_FPGA_BASE);
+
+       if ((reg & BOOT_SMALL_FLASH) && !(reg & FLASH_ONBD_N)) {
+               /*
+                * cs0: small flash (512KiB)
+                * cs2: 2 * big flash (2 * 2MiB)
+                */
+               if (cs == 0)
+                       return flash_info[2].size;
+               if (cs == 2)
+                       return flash_info[0].size + flash_info[1].size;
+       } else {
+               /*
+                * cs0: 2 * big flash (2 * 2MiB)
+                * cs2: small flash (512KiB)
+                */
+               if (cs == 0)
+                       return flash_info[0].size + flash_info[1].size;
+               if (cs == 2)
+                       return flash_info[2].size;
+       }
+
+       return 0;
+}
+
+unsigned long flash_init(void)
+{
+       unsigned long total_b = 0;
+       unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
+       unsigned char *fpga_base = (unsigned char *)CONFIG_SYS_FPGA_BASE;
+       unsigned char switch_status;
+       unsigned short index = 0;
+       int i;
+
+       /* read FPGA base register FPGA_REG0 */
+       switch_status = *fpga_base;
+
+       /* check the bitmap of switch status */
+       if (switch_status & BOOT_SMALL_FLASH) {
+               index += BOOT_SMALL_FLASH_VAL;
+       }
+       if (switch_status & FLASH_ONBD_N) {
+               index += FLASH_ONBD_N_VAL;
+       }
+       if (switch_status & FLASH_SRAM_SEL) {
+               index += FLASH_SRAM_SEL_VAL;
+       }
+
+       DEBUGF("\n");
+       DEBUGF("FLASH: Index: %d\n", index);
+
+       /* Init: no FLASHes known */
+       for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
+               flash_info[i].flash_id = FLASH_UNKNOWN;
+               flash_info[i].sector_count = -1;
+               flash_info[i].size = 0;
+
+               /* check whether the address is 0 */
+               if (flash_addr_table[index][i] == 0) {
+                       continue;
+               }
+
+               /* call flash_get_size() to initialize sector address */
+               size_b[i] = flash_get_size((vu_long *)
+                                          flash_addr_table[index][i],
+                                          &flash_info[i]);
+               flash_info[i].size = size_b[i];
+               if (flash_info[i].flash_id == FLASH_UNKNOWN) {
+                       printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
+                              i, size_b[i], size_b[i] << 20);
+                       flash_info[i].sector_count = -1;
+                       flash_info[i].size = 0;
+               }
+
+               /* Monitor protection ON by default */
+               (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
+                                   CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
+                                   &flash_info[2]);
+#ifdef CONFIG_ENV_IS_IN_FLASH
+               (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
+                                   CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
+                                   &flash_info[2]);
+               (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
+                                   CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
+                                   &flash_info[2]);
+#endif
+
+               total_b += flash_info[i].size;
+       }
+
+       return total_b;
+}