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-rw-r--r--roms/u-boot/arch/m68k/cpu/mcf523x/Makefile11
-rw-r--r--roms/u-boot/arch/m68k/cpu/mcf523x/config.mk10
-rw-r--r--roms/u-boot/arch/m68k/cpu/mcf523x/cpu.c111
-rw-r--r--roms/u-boot/arch/m68k/cpu/mcf523x/cpu_init.c169
-rw-r--r--roms/u-boot/arch/m68k/cpu/mcf523x/interrupts.c34
-rw-r--r--roms/u-boot/arch/m68k/cpu/mcf523x/speed.c39
-rw-r--r--roms/u-boot/arch/m68k/cpu/mcf523x/start.S257
7 files changed, 631 insertions, 0 deletions
diff --git a/roms/u-boot/arch/m68k/cpu/mcf523x/Makefile b/roms/u-boot/arch/m68k/cpu/mcf523x/Makefile
new file mode 100644
index 00000000..e0c5db60
--- /dev/null
+++ b/roms/u-boot/arch/m68k/cpu/mcf523x/Makefile
@@ -0,0 +1,11 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+# ccflags-y += -DET_DEBUG
+
+extra-y = start.o
+obj-y = cpu.o speed.o cpu_init.o interrupts.o
diff --git a/roms/u-boot/arch/m68k/cpu/mcf523x/config.mk b/roms/u-boot/arch/m68k/cpu/mcf523x/config.mk
new file mode 100644
index 00000000..c9435ab9
--- /dev/null
+++ b/roms/u-boot/arch/m68k/cpu/mcf523x/config.mk
@@ -0,0 +1,10 @@
+#
+# (C) Copyright 2003 Josef Baumgartner <josef.baumgartner@telex.de>
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+PLATFORM_CPPFLAGS += -mcpu=5235 -fPIC
diff --git a/roms/u-boot/arch/m68k/cpu/mcf523x/cpu.c b/roms/u-boot/arch/m68k/cpu/mcf523x/cpu.c
new file mode 100644
index 00000000..67879c7d
--- /dev/null
+++ b/roms/u-boot/arch/m68k/cpu/mcf523x/cpu.c
@@ -0,0 +1,111 @@
+/*
+ *
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <netdev.h>
+
+#include <asm/immap.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ ccm_t *ccm = (ccm_t *) MMAP_CCM;
+
+ out_8(&ccm->rcr, CCM_RCR_SOFTRST);
+ /* we don't return! */
+ return 0;
+}
+
+int checkcpu(void)
+{
+ ccm_t *ccm = (ccm_t *) MMAP_CCM;
+ u16 msk;
+ u16 id = 0;
+ u8 ver;
+
+ puts("CPU: ");
+ msk = (in_be16(&ccm->cir) >> 6);
+ ver = (in_be16(&ccm->cir) & 0x003f);
+ switch (msk) {
+ case 0x31:
+ id = 5235;
+ break;
+ }
+
+ if (id) {
+ char buf1[32], buf2[32];
+
+ printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
+ ver);
+ printf(" CPU CLK %s MHz BUS CLK %s MHz\n",
+ strmhz(buf1, gd->cpu_clk),
+ strmhz(buf2, gd->bus_clk));
+ }
+
+ return 0;
+};
+
+#if defined(CONFIG_WATCHDOG)
+/* Called by macro WATCHDOG_RESET */
+void watchdog_reset(void)
+{
+ wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
+
+ /* Count register */
+ out_be16(&wdp->sr, 0x5555);
+ asm("nop");
+ out_be16(&wdp->sr, 0xaaaa);
+}
+
+int watchdog_disable(void)
+{
+ wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
+
+ /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
+ /* halted watchdog timer */
+ setbits_be16(&wdp->cr, WTM_WCR_HALTED);
+
+ puts("WATCHDOG:disabled\n");
+ return (0);
+}
+
+int watchdog_init(void)
+{
+ wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
+ u32 wdog_module = 0;
+
+ /* set timeout and enable watchdog */
+ wdog_module = ((CONFIG_SYS_CLK / CONFIG_SYS_HZ) * CONFIG_WATCHDOG_TIMEOUT);
+ wdog_module |= (wdog_module / 8192);
+ out_be16(&wdp->mr, wdog_module);
+
+ out_be16(&wdp->cr, WTM_WCR_EN);
+ puts("WATCHDOG:enabled\n");
+
+ return (0);
+}
+#endif /* CONFIG_WATCHDOG */
+
+#if defined(CONFIG_MCFFEC)
+/* Default initializations for MCFFEC controllers. To override,
+ * create a board-specific function called:
+ * int board_eth_init(bd_t *bis)
+ */
+
+int cpu_eth_init(bd_t *bis)
+{
+ return mcffec_initialize(bis);
+}
+#endif
diff --git a/roms/u-boot/arch/m68k/cpu/mcf523x/cpu_init.c b/roms/u-boot/arch/m68k/cpu/mcf523x/cpu_init.c
new file mode 100644
index 00000000..5a789540
--- /dev/null
+++ b/roms/u-boot/arch/m68k/cpu/mcf523x/cpu_init.c
@@ -0,0 +1,169 @@
+/*
+ *
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2007, 2012 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <asm/immap.h>
+#include <asm/io.h>
+
+#if defined(CONFIG_CMD_NET)
+#include <config.h>
+#include <net.h>
+#include <asm/fec.h>
+#endif
+
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers,
+ * initialize the UPM's
+ */
+void cpu_init_f(void)
+{
+ gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+ fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS;
+ wdog_t *wdog = (wdog_t *) MMAP_WDOG;
+ scm_t *scm = (scm_t *) MMAP_SCM;
+
+ /* watchdog is enabled by default - disable the watchdog */
+#ifndef CONFIG_WATCHDOG
+ out_be16(&wdog->cr, 0);
+#endif
+
+ out_be32(&scm->rambar, CONFIG_SYS_INIT_RAM_ADDR | SCM_RAMBAR_BDE);
+
+ /* Port configuration */
+ out_8(&gpio->par_cs, 0);
+
+#if (defined(CONFIG_SYS_CS0_BASE) && defined(CONFIG_SYS_CS0_MASK) && defined(CONFIG_SYS_CS0_CTRL))
+ out_be32(&fbcs->csar0, CONFIG_SYS_CS0_BASE);
+ out_be32(&fbcs->cscr0, CONFIG_SYS_CS0_CTRL);
+ out_be32(&fbcs->csmr0, CONFIG_SYS_CS0_MASK);
+#endif
+
+#if (defined(CONFIG_SYS_CS1_BASE) && defined(CONFIG_SYS_CS1_MASK) && defined(CONFIG_SYS_CS1_CTRL))
+ setbits_8(&gpio->par_cs, GPIO_PAR_CS_CS1);
+ out_be32(&fbcs->csar1, CONFIG_SYS_CS1_BASE);
+ out_be32(&fbcs->cscr1, CONFIG_SYS_CS1_CTRL);
+ out_be32(&fbcs->csmr1, CONFIG_SYS_CS1_MASK);
+#endif
+
+#if (defined(CONFIG_SYS_CS2_BASE) && defined(CONFIG_SYS_CS2_MASK) && defined(CONFIG_SYS_CS2_CTRL))
+ setbits_8(&gpio->par_cs, GPIO_PAR_CS_CS2);
+ out_be32(&fbcs->csar2, CONFIG_SYS_CS2_BASE);
+ out_be32(&fbcs->cscr2, CONFIG_SYS_CS2_CTRL);
+ out_be32(&fbcs->csmr2, CONFIG_SYS_CS2_MASK);
+#endif
+
+#if (defined(CONFIG_SYS_CS3_BASE) && defined(CONFIG_SYS_CS3_MASK) && defined(CONFIG_SYS_CS3_CTRL))
+ setbits_8(&gpio->par_cs, GPIO_PAR_CS_CS3);
+ out_be32(&fbcs->csar3, CONFIG_SYS_CS3_BASE);
+ out_be32(&fbcs->cscr3, CONFIG_SYS_CS3_CTRL);
+ out_be32(&fbcs->csmr3, CONFIG_SYS_CS3_MASK);
+#endif
+
+#if (defined(CONFIG_SYS_CS4_BASE) && defined(CONFIG_SYS_CS4_MASK) && defined(CONFIG_SYS_CS4_CTRL))
+ setbits_8(&gpio->par_cs, GPIO_PAR_CS_CS4);
+ out_be32(&fbcs->csar4, CONFIG_SYS_CS4_BASE);
+ out_be32(&fbcs->cscr4, CONFIG_SYS_CS4_CTRL);
+ out_be32(&fbcs->csmr4, CONFIG_SYS_CS4_MASK);
+#endif
+
+#if (defined(CONFIG_SYS_CS5_BASE) && defined(CONFIG_SYS_CS5_MASK) && defined(CONFIG_SYS_CS5_CTRL))
+ setbits_8(&gpio->par_cs, GPIO_PAR_CS_CS5);
+ out_be32(&fbcs->csar5, CONFIG_SYS_CS5_BASE);
+ out_be32(&fbcs->cscr5, CONFIG_SYS_CS5_CTRL);
+ out_be32(&fbcs->csmr5, CONFIG_SYS_CS5_MASK);
+#endif
+
+#if (defined(CONFIG_SYS_CS6_BASE) && defined(CONFIG_SYS_CS6_MASK) && defined(CONFIG_SYS_CS6_CTRL))
+ setbits_8(&gpio->par_cs, GPIO_PAR_CS_CS6);
+ out_be32(&fbcs->csar6, CONFIG_SYS_CS6_BASE);
+ out_be32(&fbcs->cscr6, CONFIG_SYS_CS6_CTRL);
+ out_be32(&fbcs->csmr6, CONFIG_SYS_CS6_MASK);
+#endif
+
+#if (defined(CONFIG_SYS_CS7_BASE) && defined(CONFIG_SYS_CS7_MASK) && defined(CONFIG_SYS_CS7_CTRL))
+ setbits_8(&gpio->par_cs, GPIO_PAR_CS_CS7);
+ out_be32(&fbcs->csar7, CONFIG_SYS_CS7_BASE);
+ out_be32(&fbcs->cscr7, CONFIG_SYS_CS7_CTRL);
+ out_be32(&fbcs->csmr7, CONFIG_SYS_CS7_MASK);
+#endif
+
+#ifdef CONFIG_SYS_I2C_FSL
+ CONFIG_SYS_I2C_PINMUX_REG &= CONFIG_SYS_I2C_PINMUX_CLR;
+ CONFIG_SYS_I2C_PINMUX_REG |= CONFIG_SYS_I2C_PINMUX_SET;
+#endif
+
+ icache_enable();
+}
+
+/*
+ * initialize higher level parts of CPU like timers
+ */
+int cpu_init_r(void)
+{
+ return (0);
+}
+
+void uart_port_conf(int port)
+{
+ gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+ /* Setup Ports: */
+ switch (port) {
+ case 0:
+ clrbits_be16(&gpio->par_uart,
+ GPIO_PAR_UART_U0RXD | GPIO_PAR_UART_U0TXD);
+ setbits_be16(&gpio->par_uart,
+ GPIO_PAR_UART_U0RXD | GPIO_PAR_UART_U0TXD);
+ break;
+ case 1:
+ clrbits_be16(&gpio->par_uart,
+ GPIO_PAR_UART_U1RXD_MASK | GPIO_PAR_UART_U1TXD_MASK);
+ setbits_be16(&gpio->par_uart,
+ GPIO_PAR_UART_U1RXD_U1RXD | GPIO_PAR_UART_U1TXD_U1TXD);
+ break;
+ case 2:
+#ifdef CONFIG_SYS_UART2_PRI_GPIO
+ clrbits_be16(&gpio->par_uart,
+ GPIO_PAR_UART_U2RXD | GPIO_PAR_UART_U2TXD);
+ setbits_be16(&gpio->par_uart,
+ GPIO_PAR_UART_U2RXD | GPIO_PAR_UART_U2TXD);
+#elif defined(CONFIG_SYS_UART2_ALT1_GPIO)
+ clrbits_8(&gpio->par_feci2c,
+ GPIO_PAR_FECI2C_EMDC_MASK | GPIO_PAR_FECI2C_EMDIO_MASK);
+ setbits_8(&gpio->par_feci2c,
+ GPIO_PAR_FECI2C_EMDC_U2TXD | GPIO_PAR_FECI2C_EMDIO_U2RXD);
+#endif
+ break;
+ }
+}
+
+#if defined(CONFIG_CMD_NET)
+int fecpin_setclear(struct eth_device *dev, int setclear)
+{
+ gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+ if (setclear) {
+ setbits_8(&gpio->par_feci2c,
+ GPIO_PAR_FECI2C_EMDC_FECEMDC |
+ GPIO_PAR_FECI2C_EMDIO_FECEMDIO);
+ } else {
+ clrbits_8(&gpio->par_feci2c,
+ GPIO_PAR_FECI2C_EMDC_MASK |
+ GPIO_PAR_FECI2C_EMDIO_MASK);
+ }
+
+ return 0;
+}
+#endif
diff --git a/roms/u-boot/arch/m68k/cpu/mcf523x/interrupts.c b/roms/u-boot/arch/m68k/cpu/mcf523x/interrupts.c
new file mode 100644
index 00000000..b8ee527b
--- /dev/null
+++ b/roms/u-boot/arch/m68k/cpu/mcf523x/interrupts.c
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/* CPU specific interrupt routine */
+#include <common.h>
+#include <asm/immap.h>
+#include <asm/io.h>
+
+int interrupt_init(void)
+{
+ int0_t *intp = (int0_t *) (CONFIG_SYS_INTR_BASE);
+
+ /* Make sure all interrupts are disabled */
+ setbits_be32(&intp->imrl0, 0x1);
+
+ enable_interrupts();
+ return 0;
+}
+
+#if defined(CONFIG_MCFTMR)
+void dtimer_intr_setup(void)
+{
+ int0_t *intp = (int0_t *) (CONFIG_SYS_INTR_BASE);
+
+ out_8(&intp->icr0[CONFIG_SYS_TMRINTR_NO], CONFIG_SYS_TMRINTR_PRI);
+ clrbits_be32(&intp->imrl0, INTC_IPRL_INT0);
+ clrbits_be32(&intp->imrl0, CONFIG_SYS_TMRINTR_MASK);
+}
+#endif
diff --git a/roms/u-boot/arch/m68k/cpu/mcf523x/speed.c b/roms/u-boot/arch/m68k/cpu/mcf523x/speed.c
new file mode 100644
index 00000000..a4aa05b3
--- /dev/null
+++ b/roms/u-boot/arch/m68k/cpu/mcf523x/speed.c
@@ -0,0 +1,39 @@
+/*
+ *
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+
+#include <asm/immap.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+/*
+ * get_clocks() fills in gd->cpu_clock and gd->bus_clk
+ */
+int get_clocks(void)
+{
+ pll_t *pll = (pll_t *)(MMAP_PLL);
+
+ out_be32(&pll->syncr, PLL_SYNCR_MFD(1));
+
+ while (!(in_be32(&pll->synsr) & PLL_SYNSR_LOCK))
+ ;
+
+ gd->bus_clk = CONFIG_SYS_CLK;
+ gd->cpu_clk = (gd->bus_clk * 2);
+
+#ifdef CONFIG_SYS_I2C_FSL
+ gd->arch.i2c1_clk = gd->bus_clk;
+#endif
+
+ return (0);
+}
diff --git a/roms/u-boot/arch/m68k/cpu/mcf523x/start.S b/roms/u-boot/arch/m68k/cpu/mcf523x/start.S
new file mode 100644
index 00000000..8a23e72e
--- /dev/null
+++ b/roms/u-boot/arch/m68k/cpu/mcf523x/start.S
@@ -0,0 +1,257 @@
+/*
+ * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
+ * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <asm-offsets.h>
+#include <config.h>
+#include "version.h"
+#include <asm/cache.h>
+
+#ifndef CONFIG_IDENT_STRING
+#define CONFIG_IDENT_STRING ""
+#endif
+
+#define _START _start
+#define _FAULT _fault
+
+#define SAVE_ALL \
+ move.w #0x2700,%sr; /* disable intrs */ \
+ subl #60,%sp; /* space for 15 regs */ \
+ moveml %d0-%d7/%a0-%a6,%sp@;
+
+#define RESTORE_ALL \
+ moveml %sp@,%d0-%d7/%a0-%a6; \
+ addl #60,%sp; /* space for 15 regs */ \
+ rte;
+
+.text
+/*
+ * Vector table. This is used for initial platform startup.
+ * These vectors are to catch any un-intended traps.
+ */
+_vectors:
+
+INITSP: .long 0x00000000 /* Initial SP */
+INITPC: .long _START /* Initial PC */
+vector02: .long _FAULT /* Access Error */
+vector03: .long _FAULT /* Address Error */
+vector04: .long _FAULT /* Illegal Instruction */
+vector05: .long _FAULT /* Reserved */
+vector06: .long _FAULT /* Reserved */
+vector07: .long _FAULT /* Reserved */
+vector08: .long _FAULT /* Privilege Violation */
+vector09: .long _FAULT /* Trace */
+vector0A: .long _FAULT /* Unimplemented A-Line */
+vector0B: .long _FAULT /* Unimplemented F-Line */
+vector0C: .long _FAULT /* Debug Interrupt */
+vector0D: .long _FAULT /* Reserved */
+vector0E: .long _FAULT /* Format Error */
+vector0F: .long _FAULT /* Unitialized Int. */
+
+/* Reserved */
+vector10_17:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector18: .long _FAULT /* Spurious Interrupt */
+vector19: .long _FAULT /* Autovector Level 1 */
+vector1A: .long _FAULT /* Autovector Level 2 */
+vector1B: .long _FAULT /* Autovector Level 3 */
+vector1C: .long _FAULT /* Autovector Level 4 */
+vector1D: .long _FAULT /* Autovector Level 5 */
+vector1E: .long _FAULT /* Autovector Level 6 */
+vector1F: .long _FAULT /* Autovector Level 7 */
+
+/* TRAP #0 - #15 */
+vector20_2F:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+/* Reserved */
+vector30_3F:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector64_127:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector128_191:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector192_255:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+ .text
+
+ .globl _start
+_start:
+ nop
+ nop
+ move.w #0x2700,%sr /* Mask off Interrupt */
+
+ /* Set vector base register at the beginning of the Flash */
+ move.l #CONFIG_SYS_FLASH_BASE, %d0
+ movec %d0, %VBR
+
+ move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
+ movec %d0, %RAMBAR1
+
+ /* invalidate and disable cache */
+ move.l #CF_CACR_CINV, %d0 /* Invalidate cache cmd */
+ movec %d0, %CACR /* Invalidate cache */
+ nop
+ move.l #0, %d0
+ movec %d0, %ACR0
+ movec %d0, %ACR1
+
+ /* initialize general use internal ram */
+ move.l #0, %d0
+ move.l #(ICACHE_STATUS), %a1 /* icache */
+ move.l #(DCACHE_STATUS), %a2 /* icache */
+ move.l %d0, (%a1)
+ move.l %d0, (%a2)
+
+ /* set stackpointer to end of internal ram to get some stackspace for the
+ first c-code */
+ move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
+ clr.l %sp@-
+
+ move.l #__got_start, %a5 /* put relocation table address to a5 */
+
+ bsr cpu_init_f /* run low-level CPU init code (from flash) */
+ bsr board_init_f /* run low-level board init code (from flash) */
+
+ /* board_init_f() does not return */
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * r3 = dest
+ * r4 = src
+ * r5 = length in bytes
+ * r6 = cachelinesize
+ */
+ .globl relocate_code
+relocate_code:
+ link.w %a6,#0
+ move.l 8(%a6), %sp /* set new stack pointer */
+
+ move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
+ move.l 16(%a6), %a0 /* Save copy of Destination Address */
+
+ move.l #CONFIG_SYS_MONITOR_BASE, %a1
+ move.l #__init_end, %a2
+ move.l %a0, %a3
+
+ /* copy the code to RAM */
+1:
+ move.l (%a1)+, (%a3)+
+ cmp.l %a1,%a2
+ bgt.s 1b
+
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+ move.l %a0, %a1
+ add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
+ jmp (%a1)
+
+in_ram:
+
+clear_bss:
+ /*
+ * Now clear BSS segment
+ */
+ move.l %a0, %a1
+ add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
+ move.l %a0, %d1
+ add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
+6:
+ clr.l (%a1)+
+ cmp.l %a1,%d1
+ bgt.s 6b
+
+ /*
+ * fix got table in RAM
+ */
+ move.l %a0, %a1
+ add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
+ move.l %a1,%a5 /* * fix got pointer register a5 */
+
+ move.l %a0, %a2
+ add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
+
+7:
+ move.l (%a1),%d1
+ sub.l #_start,%d1
+ add.l %a0,%d1
+ move.l %d1,(%a1)+
+ cmp.l %a2, %a1
+ bne 7b
+
+ /* calculate relative jump to board_init_r in ram */
+ move.l %a0, %a1
+ add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
+
+ /* set parameters for board_init_r */
+ move.l %a0,-(%sp) /* dest_addr */
+ move.l %d0,-(%sp) /* gd */
+ jsr (%a1)
+
+/*------------------------------------------------------------------------------*/
+/* exception code */
+ .globl _fault
+_fault:
+ bra _fault
+ .globl _exc_handler
+
+_exc_handler:
+ SAVE_ALL
+ movel %sp,%sp@-
+ bsr exc_handler
+ addql #4,%sp
+ RESTORE_ALL
+
+ .globl _int_handler
+_int_handler:
+ SAVE_ALL
+ movel %sp,%sp@-
+ bsr int_handler
+ addql #4,%sp
+ RESTORE_ALL
+
+/*------------------------------------------------------------------------------*/
+
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION_STRING, "\0"
+ .align 4
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 18:51:22 +0000