--- /dev/null
+//==========================================================================
+//
+// board_misc.c
+//
+// HAL misc board support code for the board
+//
+//==========================================================================
+//####ECOSGPLCOPYRIGHTBEGIN####
+// -------------------------------------------
+// This file is part of eCos, the Embedded Configurable Operating System.
+// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
+//
+// eCos 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 or (at your option) any later version.
+//
+// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
+// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or inline functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. However the source code for this file must still be made available
+// in accordance with section (3) of the GNU General Public License.
+//
+// This exception does not invalidate any other reasons why a work based on
+// this file might be covered by the GNU General Public License.
+//
+// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
+// at http://sources.redhat.com/ecos/ecos-license/
+// -------------------------------------------
+//####ECOSGPLCOPYRIGHTEND####
+//========================================================================*/
+
+#include <pkgconf/hal.h>
+#include <pkgconf/system.h>
+#include <redboot.h>
+#include CYGBLD_HAL_PLATFORM_H
+
+#include <cyg/infra/cyg_type.h> // base types
+#include <cyg/infra/cyg_trac.h> // tracing macros
+#include <cyg/infra/cyg_ass.h> // assertion macros
+
+#include <cyg/hal/hal_io.h> // IO macros
+#include <cyg/hal/hal_arch.h> // Register state info
+#include <cyg/hal/hal_diag.h>
+#include <cyg/hal/hal_intr.h> // Interrupt names
+#include <cyg/hal/hal_cache.h>
+#include <cyg/hal/hal_soc.h> // Hardware definitions
+#include <cyg/hal/fsl_board.h> // Platform specifics
+
+#include <cyg/infra/diag.h> // diag_printf
+
+// All the MM table layout is here:
+#include <cyg/hal/hal_mm.h>
+
+externC void* memset(void *, int, size_t);
+
+void hal_mmu_init(void)
+{
+ unsigned long ttb_base = RAM_BANK0_BASE + 0x4000;
+ unsigned long i;
+
+ /*
+ * Set the TTB register
+ */
+ asm volatile ("mcr p15,0,%0,c2,c0,0" : : "r"(ttb_base) /*:*/);
+
+ /*
+ * Set the Domain Access Control Register
+ */
+ i = ARM_ACCESS_DACR_DEFAULT;
+ asm volatile ("mcr p15,0,%0,c3,c0,0" : : "r"(i) /*:*/);
+
+ /*
+ * First clear all TT entries - ie Set them to Faulting
+ */
+ memset((void *)ttb_base, 0, ARM_FIRST_LEVEL_PAGE_TABLE_SIZE);
+
+ /* Actual Virtual Size Attributes Function */
+ /* Base Base MB cached? buffered? access permissions */
+ /* xxx00000 xxx00000 */
+ X_ARM_MMU_SECTION(0x000, 0xF00, 0x1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* ROM */
+ X_ARM_MMU_SECTION(0x300, 0x300, 0x1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* L2CC */
+ X_ARM_MMU_SECTION(0x43F, 0x43F, 0x3C1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Internal Regsisters upto SDRAM*/
+ X_ARM_MMU_SECTION(0x800, 0x000, 0x80, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
+ X_ARM_MMU_SECTION(0x800, 0x800, 0x80, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
+ X_ARM_MMU_SECTION(0xA00, 0xA00, 0x20, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Flash */
+ X_ARM_MMU_SECTION(0xB40, 0xB40, 0x10, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* External I/O */
+ X_ARM_MMU_SECTION(0xB50, 0xB50, 0x8, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* PSRAM */
+ X_ARM_MMU_SECTION(0xB60, 0xB60, 0x10, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* External I/O */
+ X_ARM_MMU_SECTION(0xB80, 0xB80, 0x10, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* EIM control*/
+}
+
+//
+// Platform specific initialization
+//
+
+unsigned int g_clock_src;
+extern int g_board_type;
+
+void plf_hardware_init(void)
+{
+ unsigned long val = readl(CCM_BASE_ADDR + CLKCTL_CCMR);
+ unsigned long reg;
+
+ if ((val & 0x6) == 0x4) {
+ g_clock_src = FREQ_26MHZ;
+ } else if ((val & 0x6) == 0x2) {
+ g_clock_src = FREQ_32768HZ;
+ }
+
+ /* Reset interrupt status reg */
+ writew(0x1F, PBC_INT_REST);
+ writew(0x00, PBC_INT_REST);
+ writew(0xFFFF, PBC_INT_MASK);
+ // UART1
+ writel(0x1210, IOMUXC_BASE_ADDR + 0x80);
+ // Enable the MMC
+ writel(0x01220100, IOMUXC_BASE_ADDR + 0x148);
+ reg = readl(GPIO3_BASE_ADDR + 0x4);
+ reg |= 0x1;
+ writel(reg, GPIO3_BASE_ADDR + 0x4);
+ reg = readl(GPIO3_BASE_ADDR);
+ reg |= 0x1;
+ writel(reg, GPIO3_BASE_ADDR);
+
+ g_board_type = BOARD_TYPE_3STACK;
+}
+
+#include CYGHWR_MEMORY_LAYOUT_H
+
+typedef void code_fun(void);
+
+void board_program_new_stack(void *func)
+{
+ register CYG_ADDRESS stack_ptr asm("sp");
+ register CYG_ADDRESS old_stack asm("r4");
+ register code_fun *new_func asm("r0");
+ old_stack = stack_ptr;
+ stack_ptr = CYGMEM_REGION_ram + CYGMEM_REGION_ram_SIZE - sizeof(CYG_ADDRESS);
+ new_func = (code_fun*)func;
+ new_func();
+ stack_ptr = old_stack;
+}
+
+static void display_clock_src(void)
+{
+ diag_printf("\n");
+ if (g_clock_src == FREQ_27MHZ) {
+ diag_printf("Clock input is 27 MHz");
+ } else if (g_clock_src == FREQ_26MHZ) {
+ diag_printf("Clock input is 26 MHz");
+ } else if (g_clock_src == FREQ_32768HZ) {
+ diag_printf("Clock input is 32KHz");
+ } else {
+ diag_printf("Unknown clock input source. Something is wrong!");
+ }
+}
+RedBoot_init(display_clock_src, RedBoot_INIT_LAST);
+
+// ------------------------------------------------------------------------
projects / karo-tx-redboot.git / blobdiff