summaryrefslogtreecommitdiff
path: root/arch/sparc/cpu/leon2/prom.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/cpu/leon2/prom.c')
-rw-r--r--arch/sparc/cpu/leon2/prom.c1032
1 files changed, 0 insertions, 1032 deletions
diff --git a/arch/sparc/cpu/leon2/prom.c b/arch/sparc/cpu/leon2/prom.c
deleted file mode 100644
index 7829e7abb2..0000000000
--- a/arch/sparc/cpu/leon2/prom.c
+++ /dev/null
@@ -1,1032 +0,0 @@
-/* prom.c - emulates a sparc v0 PROM for the linux kernel.
- *
- * Copyright (C) 2003 Konrad Eisele <eiselekd@web.de>
- * Copyright (C) 2004 Stefan Holst <mail@s-holst.de>
- * Copyright (C) 2007 Daniel Hellstrom <daniel@gaisler.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/prom.h>
-#include <asm/machines.h>
-#include <asm/srmmu.h>
-#include <asm/processor.h>
-#include <asm/irq.h>
-#include <asm/leon.h>
-
-#include <config.h>
-/*
-#define PRINT_ROM_VEC
-*/
-extern struct linux_romvec *kernel_arg_promvec;
-
-#define PROM_PGT __attribute__ ((__section__ (".prom.pgt")))
-#define PROM_TEXT __attribute__ ((__section__ (".prom.text")))
-#define PROM_DATA __attribute__ ((__section__ (".prom.data")))
-
-void *__prom_start_reloc; /* relocated prom_start address */
-
-/* for __va */
-extern int __prom_start;
-#define PAGE_OFFSET 0xf0000000
-#define phys_base CONFIG_SYS_SDRAM_BASE
-#define PROM_OFFS 8192
-#define PROM_SIZE_MASK (PROM_OFFS-1)
-#define __va(x) ( \
- (void *)( ((unsigned long)(x))-PROM_OFFS+ \
- (CONFIG_SYS_PROM_OFFSET-phys_base)+PAGE_OFFSET-CONFIG_SYS_TEXT_BASE ) \
- )
-#define __phy(x) ((void *)(((unsigned long)(x))-PROM_OFFS+CONFIG_SYS_PROM_OFFSET-CONFIG_SYS_TEXT_BASE))
-
-struct property {
- char *name;
- char *value;
- int length;
-};
-
-struct node {
- int level;
- struct property *properties;
-};
-
-static void leon_reboot(char *bcommand);
-static void leon_halt(void);
-static int leon_nbputchar(int c);
-static int leon_nbgetchar(void);
-
-static int no_nextnode(int node);
-static int no_child(int node);
-static int no_proplen(int node, char *name);
-static int no_getprop(int node, char *name, char *value);
-static int no_setprop(int node, char *name, char *value, int len);
-static char *no_nextprop(int node, char *name);
-
-static struct property PROM_TEXT *find_property(int node, char *name);
-static int PROM_TEXT leon_strcmp(const char *s1, const char *s2);
-static void *PROM_TEXT leon_memcpy(void *dest, const void *src, size_t n);
-static void PROM_TEXT leon_reboot_physical(char *bcommand);
-
-void __inline__ leon_flush_cache_all(void)
-{
- __asm__ __volatile__(" flush ");
- __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"::"i"(ASI_DFLUSH):"memory");
-}
-
-void __inline__ leon_flush_tlb_all(void)
-{
- leon_flush_cache_all();
- __asm__ __volatile__("sta %%g0, [%0] %1\n\t"::"r"(0x400),
- "i"(ASI_MMUFLUSH):"memory");
-}
-
-typedef struct {
- unsigned int ctx_table[256];
- unsigned int pgd_table[256];
-} sparc_srmmu_setup;
-
-sparc_srmmu_setup srmmu_tables PROM_PGT = {
- {0},
- {0x1e,
- 0x10001e,
- 0x20001e,
- 0x30001e,
- 0x40001e,
- 0x50001e,
- 0x60001e,
- 0x70001e,
- 0x80001e,
- 0x90001e,
- 0xa0001e,
- 0xb0001e,
- 0xc0001e,
- 0xd0001e,
- 0xe0001e,
- 0xf0001e,
- 0x100001e,
- 0x110001e,
- 0x120001e,
- 0x130001e,
- 0x140001e,
- 0x150001e,
- 0x160001e,
- 0x170001e,
- 0x180001e,
- 0x190001e,
- 0x1a0001e,
- 0x1b0001e,
- 0x1c0001e,
- 0x1d0001e,
- 0x1e0001e,
- 0x1f0001e,
- 0x200001e,
- 0x210001e,
- 0x220001e,
- 0x230001e,
- 0x240001e,
- 0x250001e,
- 0x260001e,
- 0x270001e,
- 0x280001e,
- 0x290001e,
- 0x2a0001e,
- 0x2b0001e,
- 0x2c0001e,
- 0x2d0001e,
- 0x2e0001e,
- 0x2f0001e,
- 0x300001e,
- 0x310001e,
- 0x320001e,
- 0x330001e,
- 0x340001e,
- 0x350001e,
- 0x360001e,
- 0x370001e,
- 0x380001e,
- 0x390001e,
- 0x3a0001e,
- 0x3b0001e,
- 0x3c0001e,
- 0x3d0001e,
- 0x3e0001e,
- 0x3f0001e,
- 0x400001e,
- 0x410001e,
- 0x420001e,
- 0x430001e,
- 0x440001e,
- 0x450001e,
- 0x460001e,
- 0x470001e,
- 0x480001e,
- 0x490001e,
- 0x4a0001e,
- 0x4b0001e,
- 0x4c0001e,
- 0x4d0001e,
- 0x4e0001e,
- 0x4f0001e,
- 0x500001e,
- 0x510001e,
- 0x520001e,
- 0x530001e,
- 0x540001e,
- 0x550001e,
- 0x560001e,
- 0x570001e,
- 0x580001e,
- 0x590001e,
- 0x5a0001e,
- 0x5b0001e,
- 0x5c0001e,
- 0x5d0001e,
- 0x5e0001e,
- 0x5f0001e,
- 0x600001e,
- 0x610001e,
- 0x620001e,
- 0x630001e,
- 0x640001e,
- 0x650001e,
- 0x660001e,
- 0x670001e,
- 0x680001e,
- 0x690001e,
- 0x6a0001e,
- 0x6b0001e,
- 0x6c0001e,
- 0x6d0001e,
- 0x6e0001e,
- 0x6f0001e,
- 0x700001e,
- 0x710001e,
- 0x720001e,
- 0x730001e,
- 0x740001e,
- 0x750001e,
- 0x760001e,
- 0x770001e,
- 0x780001e,
- 0x790001e,
- 0x7a0001e,
- 0x7b0001e,
- 0x7c0001e,
- 0x7d0001e,
- 0x7e0001e,
- 0x7f0001e,
- 0x800001e,
- 0x810001e,
- 0x820001e,
- 0x830001e,
- 0x840001e,
- 0x850001e,
- 0x860001e,
- 0x870001e,
- 0x880001e,
- 0x890001e,
- 0x8a0001e,
- 0x8b0001e,
- 0x8c0001e,
- 0x8d0001e,
- 0x8e0001e,
- 0x8f0001e,
- 0x900001e,
- 0x910001e,
- 0x920001e,
- 0x930001e,
- 0x940001e,
- 0x950001e,
- 0x960001e,
- 0x970001e,
- 0x980001e,
- 0x990001e,
- 0x9a0001e,
- 0x9b0001e,
- 0x9c0001e,
- 0x9d0001e,
- 0x9e0001e,
- 0x9f0001e,
- 0xa00001e,
- 0xa10001e,
- 0xa20001e,
- 0xa30001e,
- 0xa40001e,
- 0xa50001e,
- 0xa60001e,
- 0xa70001e,
- 0xa80001e,
- 0xa90001e,
- 0xaa0001e,
- 0xab0001e,
- 0xac0001e,
- 0xad0001e,
- 0xae0001e,
- 0xaf0001e,
- 0xb00001e,
- 0xb10001e,
- 0xb20001e,
- 0xb30001e,
- 0xb40001e,
- 0xb50001e,
- 0xb60001e,
- 0xb70001e,
- 0xb80001e,
- 0xb90001e,
- 0xba0001e,
- 0xbb0001e,
- 0xbc0001e,
- 0xbd0001e,
- 0xbe0001e,
- 0xbf0001e,
- 0xc00001e,
- 0xc10001e,
- 0xc20001e,
- 0xc30001e,
- 0xc40001e,
- 0xc50001e,
- 0xc60001e,
- 0xc70001e,
- 0xc80001e,
- 0xc90001e,
- 0xca0001e,
- 0xcb0001e,
- 0xcc0001e,
- 0xcd0001e,
- 0xce0001e,
- 0xcf0001e,
- 0xd00001e,
- 0xd10001e,
- 0xd20001e,
- 0xd30001e,
- 0xd40001e,
- 0xd50001e,
- 0xd60001e,
- 0xd70001e,
- 0xd80001e,
- 0xd90001e,
- 0xda0001e,
- 0xdb0001e,
- 0xdc0001e,
- 0xdd0001e,
- 0xde0001e,
- 0xdf0001e,
- 0xe00001e,
- 0xe10001e,
- 0xe20001e,
- 0xe30001e,
- 0xe40001e,
- 0xe50001e,
- 0xe60001e,
- 0xe70001e,
- 0xe80001e,
- 0xe90001e,
- 0xea0001e,
- 0xeb0001e,
- 0xec0001e,
- 0xed0001e,
- 0xee0001e,
- 0xef0001e,
- 0x400001e /* default */
- }
-};
-
-/* a self contained prom info structure */
-struct leon_reloc_func {
- struct property *(*find_property) (int node, char *name);
- int (*strcmp) (char *s1, char *s2);
- void *(*memcpy) (void *dest, const void *src, size_t n);
- void (*reboot_physical) (char *cmd);
-};
-
-struct leon_prom_info {
- int freq_khz;
- int leon_nctx;
- int mids[32];
- int baudrates[2];
- struct leon_reloc_func reloc_funcs;
- struct property root_properties[4];
- struct property cpu_properties[7];
-#undef CPUENTRY
-#define CPUENTRY(idx) struct property cpu_properties##idx[4]
- CPUENTRY(1);
- CPUENTRY(2);
- CPUENTRY(3);
- CPUENTRY(4);
- CPUENTRY(5);
- CPUENTRY(6);
- CPUENTRY(7);
- CPUENTRY(8);
- CPUENTRY(9);
- CPUENTRY(10);
- CPUENTRY(11);
- CPUENTRY(12);
- CPUENTRY(13);
- CPUENTRY(14);
- CPUENTRY(15);
- CPUENTRY(16);
- CPUENTRY(17);
- CPUENTRY(18);
- CPUENTRY(19);
- CPUENTRY(20);
- CPUENTRY(21);
- CPUENTRY(22);
- CPUENTRY(23);
- CPUENTRY(24);
- CPUENTRY(25);
- CPUENTRY(26);
- CPUENTRY(27);
- CPUENTRY(28);
- CPUENTRY(29);
- CPUENTRY(30);
- CPUENTRY(31);
- struct idprom idprom;
- struct linux_nodeops nodeops;
- struct linux_mlist_v0 *totphys_p;
- struct linux_mlist_v0 totphys;
- struct linux_mlist_v0 *avail_p;
- struct linux_mlist_v0 avail;
- struct linux_mlist_v0 *prommap_p;
- void (*synchook) (void);
- struct linux_arguments_v0 *bootargs_p;
- struct linux_arguments_v0 bootargs;
- struct linux_romvec romvec;
- struct node nodes[35];
- char s_device_type[12];
- char s_cpu[4];
- char s_mid[4];
- char s_idprom[7];
- char s_compatability[14];
- char s_leon2[6];
- char s_mmu_nctx[9];
- char s_frequency[16];
- char s_uart1_baud[11];
- char s_uart2_baud[11];
- char arg[256];
-};
-
-/* static prom info */
-static struct leon_prom_info PROM_DATA spi = {
- CONFIG_SYS_CLK_FREQ / 1000,
- 256,
- {
-#undef CPUENTRY
-#define CPUENTRY(idx) idx
- CPUENTRY(0),
- CPUENTRY(1),
- CPUENTRY(2),
- CPUENTRY(3),
- CPUENTRY(4),
- CPUENTRY(5),
- CPUENTRY(6),
- CPUENTRY(7),
- CPUENTRY(8),
- CPUENTRY(9),
- CPUENTRY(10),
- CPUENTRY(11),
- CPUENTRY(12),
- CPUENTRY(13),
- CPUENTRY(14),
- CPUENTRY(15),
- CPUENTRY(16),
- CPUENTRY(17),
- CPUENTRY(18),
- CPUENTRY(19),
- CPUENTRY(20),
- CPUENTRY(21),
- CPUENTRY(22),
- CPUENTRY(23),
- CPUENTRY(24),
- CPUENTRY(25),
- CPUENTRY(26),
- CPUENTRY(27),
- CPUENTRY(28),
- CPUENTRY(29),
- CPUENTRY(30),
- 31},
- {38400, 38400},
- {
- __va(find_property),
- __va(leon_strcmp),
- __va(leon_memcpy),
- __phy(leon_reboot_physical),
- },
- {
- {__va(spi.s_device_type), __va(spi.s_idprom), 4},
- {__va(spi.s_idprom), (char *)__va(&spi.idprom), sizeof(struct idprom)},
- {__va(spi.s_compatability), __va(spi.s_leon2), 5},
- {NULL, NULL, -1}
- },
- {
- {__va(spi.s_device_type), __va(spi.s_cpu), 4},
- {__va(spi.s_mid), __va(&spi.mids[0]), 4},
- {__va(spi.s_mmu_nctx), (char *)__va(&spi.leon_nctx), 4},
- {__va(spi.s_frequency), (char *)__va(&spi.freq_khz), 4},
- {__va(spi.s_uart1_baud), (char *)__va(&spi.baudrates[0]), 4},
- {__va(spi.s_uart2_baud), (char *)__va(&spi.baudrates[1]), 4},
- {NULL, NULL, -1}
- },
-#undef CPUENTRY
-#define CPUENTRY(idx) \
- { /* cpu_properties */ \
- {__va(spi.s_device_type), __va(spi.s_cpu), 4}, \
- {__va(spi.s_mid), __va(&spi.mids[idx]), 4}, \
- {__va(spi.s_frequency), (char *)__va(&spi.freq_khz), 4}, \
- {NULL, NULL, -1} \
- }
- CPUENTRY(1),
- CPUENTRY(2),
- CPUENTRY(3),
- CPUENTRY(4),
- CPUENTRY(5),
- CPUENTRY(6),
- CPUENTRY(7),
- CPUENTRY(8),
- CPUENTRY(9),
- CPUENTRY(10),
- CPUENTRY(11),
- CPUENTRY(12),
- CPUENTRY(13),
- CPUENTRY(14),
- CPUENTRY(15),
- CPUENTRY(16),
- CPUENTRY(17),
- CPUENTRY(18),
- CPUENTRY(19),
- CPUENTRY(20),
- CPUENTRY(21),
- CPUENTRY(22),
- CPUENTRY(23),
- CPUENTRY(24),
- CPUENTRY(25),
- CPUENTRY(26),
- CPUENTRY(27),
- CPUENTRY(28),
- CPUENTRY(29),
- CPUENTRY(30),
- CPUENTRY(31),
- {
- 0x01, /* format */
- M_LEON2 | M_LEON2_SOC, /* machine type */
- {0, 0, 0, 0, 0, 0}, /* eth */
- 0, /* date */
- 0, /* sernum */
- 0, /* checksum */
- {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* reserved */
- },
- {
- __va(no_nextnode),
- __va(no_child),
- __va(no_proplen),
- __va(no_getprop),
- __va(no_setprop),
- __va(no_nextprop)
- },
- __va(&spi.totphys),
- {
- NULL,
- (char *)CONFIG_SYS_SDRAM_BASE,
- 0,
- },
- __va(&spi.avail),
- {
- NULL,
- (char *)CONFIG_SYS_SDRAM_BASE,
- 0,
- },
- NULL, /* prommap_p */
- NULL,
- __va(&spi.bootargs),
- {
- {NULL, __va(spi.arg), NULL /*... */ },
- /*... */
- },
- {
- 0,
- 0, /* sun4c v0 prom */
- 0, 0,
- {__va(&spi.totphys_p), __va(&spi.prommap_p), __va(&spi.avail_p)},
- __va(&spi.nodeops),
- NULL, {NULL /* ... */ },
- NULL, NULL,
- NULL, NULL, /* pv_getchar, pv_putchar */
- __va(leon_nbgetchar), __va(leon_nbputchar),
- NULL,
- __va(leon_reboot),
- NULL,
- NULL,
- NULL,
- __va(leon_halt),
- __va(&spi.synchook),
- {NULL},
- __va(&spi.bootargs_p)
- /*... */
- },
- {
- {0, __va(spi.root_properties + 3) /* NULL, NULL, -1 */ },
- {0, __va(spi.root_properties)},
- /* cpu 0, must be spi.nodes[2] see leon_prom_init() */
- {1, __va(spi.cpu_properties)},
-
-#undef CPUENTRY
-#define CPUENTRY(idx) \
- {1, __va(spi.cpu_properties##idx) } /* cpu <idx> */
- CPUENTRY(1),
- CPUENTRY(2),
- CPUENTRY(3),
- CPUENTRY(4),
- CPUENTRY(5),
- CPUENTRY(6),
- CPUENTRY(7),
- CPUENTRY(8),
- CPUENTRY(9),
- CPUENTRY(10),
- CPUENTRY(11),
- CPUENTRY(12),
- CPUENTRY(13),
- CPUENTRY(14),
- CPUENTRY(15),
- CPUENTRY(16),
- CPUENTRY(17),
- CPUENTRY(18),
- CPUENTRY(19),
- CPUENTRY(20),
- CPUENTRY(21),
- CPUENTRY(22),
- CPUENTRY(23),
- CPUENTRY(24),
- CPUENTRY(25),
- CPUENTRY(26),
- CPUENTRY(27),
- CPUENTRY(28),
- CPUENTRY(29),
- CPUENTRY(30),
- CPUENTRY(31),
- {-1, __va(spi.root_properties + 3) /* NULL, NULL, -1 */ }
- },
- "device_type",
- "cpu",
- "mid",
- "idprom",
- "compatability",
- "leon2",
- "mmu-nctx",
- "clock-frequency",
- "uart1_baud",
- "uart2_baud",
- CONFIG_DEFAULT_KERNEL_COMMAND_LINE
-};
-
-/* from arch/sparc/kernel/setup.c */
-#define RAMDISK_LOAD_FLAG 0x4000
-extern unsigned short root_flags;
-extern unsigned short root_dev;
-extern unsigned short ram_flags;
-extern unsigned int sparc_ramdisk_image;
-extern unsigned int sparc_ramdisk_size;
-extern int root_mountflags;
-
-extern char initrd_end, initrd_start;
-
-/* Reboot the CPU = jump to beginning of flash again.
- *
- * Make sure that all function are inlined here.
- */
-static void PROM_TEXT leon_reboot(char *bcommand)
-{
- register char *arg = bcommand;
- void __attribute__ ((noreturn)) (*reboot_physical) (char *cmd);
-
- /* get physical address */
- struct leon_prom_info *pspi =
- (void *)(CONFIG_SYS_PROM_OFFSET + sizeof(srmmu_tables));
-
- unsigned int *srmmu_ctx_table;
-
- /* Turn of Interrupts */
- set_pil(0xf);
-
- /* Set kernel's context, context zero */
- srmmu_set_context(0);
-
- /* Get physical address of the MMU shutdown routine */
- reboot_physical = (void *)
- SPARC_BYPASS_READ(&pspi->reloc_funcs.reboot_physical);
-
- /* Now that we know the physical address of the function
- * we can make the MMU allow jumping to it.
- */
- srmmu_ctx_table = (unsigned int *)srmmu_get_ctable_ptr();
-
- srmmu_ctx_table = (unsigned int *)SPARC_BYPASS_READ(srmmu_ctx_table);
-
- /* get physical address of kernel's context table (assume ptd) */
- srmmu_ctx_table = (unsigned int *)
- (((unsigned int)srmmu_ctx_table & 0xfffffffc) << 4);
-
- /* enable access to physical address of MMU shutdown function */
- SPARC_BYPASS_WRITE(&srmmu_ctx_table
- [((unsigned int)reboot_physical) >> 24],
- (((unsigned int)reboot_physical & 0xff000000) >> 4) |
- 0x1e);
-
- /* flush TLB cache */
- leon_flush_tlb_all();
-
- /* flash instruction & data cache */
- sparc_icache_flush_all();
- sparc_dcache_flush_all();
-
- /* jump to physical address function
- * so that when the MMU is disabled
- * we can continue to execute
- */
- reboot_physical(arg);
-}
-
-static void PROM_TEXT leon_reboot_physical(char *bcommand)
-{
- void __attribute__ ((noreturn)) (*reset) (void);
-
- /* Turn off MMU */
- srmmu_set_mmureg(0);
-
- /* Hardcoded start address */
- reset = CONFIG_SYS_MONITOR_BASE;
-
- /* flush data cache */
- sparc_dcache_flush_all();
-
- /* flush instruction cache */
- sparc_icache_flush_all();
-
- /* Jump to start in Flash */
- reset();
-}
-
-static void PROM_TEXT leon_halt(void)
-{
- while (1) ;
-}
-
-/* get single char, don't care for blocking*/
-static int PROM_TEXT leon_nbgetchar(void)
-{
- return -1;
-}
-
-/* put single char, don't care for blocking*/
-static int PROM_TEXT leon_nbputchar(int c)
-{
- LEON2_regs *leon2 = (LEON2_regs *) LEON2_PREGS;
-
- /***** put char in buffer... ***********
- * Make sure all functions are inline! *
- ***************************************/
-
- /* Wait for last character to go. */
- while (!(SPARC_BYPASS_READ(&leon2->UART_Status_1)
- & LEON2_UART_STAT_THE)) ;
-
- /* Send data */
- SPARC_BYPASS_WRITE(&leon2->UART_Channel_1, c);
-
- /* Wait for data to be sent */
- while (!(SPARC_BYPASS_READ(&leon2->UART_Status_1)
- & LEON2_UART_STAT_TSE)) ;
-
- return 0;
-}
-
-/* node ops */
-
-/*#define nodes ((struct node *)__va(&pspi->nodes))*/
-#define nodes ((struct node *)(pspi->nodes))
-
-static int PROM_TEXT no_nextnode(int node)
-{
- /* get physical address */
- struct leon_prom_info *pspi =
- (void *)(CONFIG_SYS_PROM_OFFSET + sizeof(srmmu_tables));
-
- /* convert into virtual address */
- pspi = (struct leon_prom_info *)
- (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
-
- if (nodes[node].level == nodes[node + 1].level)
- return node + 1;
- return -1;
-}
-
-static int PROM_TEXT no_child(int node)
-{
- /* get physical address */
- struct leon_prom_info *pspi = (struct leon_prom_info *)
- (CONFIG_SYS_PROM_OFFSET + sizeof(srmmu_tables));
-
- /* convert into virtual address */
- pspi = (struct leon_prom_info *)
- (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
-
- if (nodes[node].level == nodes[node + 1].level - 1)
- return node + 1;
- return -1;
-}
-
-static struct property PROM_TEXT *find_property(int node, char *name)
-{
- /* get physical address */
- struct leon_prom_info *pspi = (struct leon_prom_info *)
- (CONFIG_SYS_PROM_OFFSET + sizeof(srmmu_tables));
-
- /* convert into virtual address */
- pspi = (struct leon_prom_info *)
- (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
-
- struct property *prop = &nodes[node].properties[0];
- while (prop && prop->name) {
- if (pspi->reloc_funcs.strcmp(prop->name, name) == 0)
- return prop;
- prop++;
- }
- return NULL;
-}
-
-static int PROM_TEXT no_proplen(int node, char *name)
-{
- /* get physical address */
- struct leon_prom_info *pspi = (struct leon_prom_info *)
- (CONFIG_SYS_PROM_OFFSET + sizeof(srmmu_tables));
-
- /* convert into virtual address */
- pspi = (struct leon_prom_info *)
- (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
-
- struct property *prop = pspi->reloc_funcs.find_property(node, name);
- if (prop)
- return prop->length;
- return -1;
-}
-
-static int PROM_TEXT no_getprop(int node, char *name, char *value)
-{
- /* get physical address */
- struct leon_prom_info *pspi = (struct leon_prom_info *)
- (CONFIG_SYS_PROM_OFFSET + sizeof(srmmu_tables));
-
- /* convert into virtual address */
- pspi = (struct leon_prom_info *)
- (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
-
- struct property *prop = pspi->reloc_funcs.find_property(node, name);
- if (prop) {
- pspi->reloc_funcs.memcpy(value, prop->value, prop->length);
- return 1;
- }
- return -1;
-}
-
-static int PROM_TEXT no_setprop(int node, char *name, char *value, int len)
-{
- return -1;
-}
-
-static char PROM_TEXT *no_nextprop(int node, char *name)
-{
- /* get physical address */
- struct leon_prom_info *pspi = (struct leon_prom_info *)
- (CONFIG_SYS_PROM_OFFSET + sizeof(srmmu_tables));
- struct property *prop;
-
- /* convert into virtual address */
- pspi = (struct leon_prom_info *)
- (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
-
- if (!name || !name[0])
- return nodes[node].properties[0].name;
-
- prop = pspi->reloc_funcs.find_property(node, name);
- if (prop)
- return prop[1].name;
- return NULL;
-}
-
-static int PROM_TEXT leon_strcmp(const char *s1, const char *s2)
-{
- register char result;
-
- while (1) {
- result = *s1 - *s2;
- if (result || !*s1)
- break;
- s2++;
- s1++;
- }
-
- return result;
-}
-
-static void *PROM_TEXT leon_memcpy(void *dest, const void *src, size_t n)
-{
- char *dst = (char *)dest, *source = (char *)src;
-
- while (n--) {
- *dst = *source;
- dst++;
- source++;
- }
- return dest;
-}
-
-#define GETREGSP(sp) __asm__ __volatile__("mov %%sp, %0" : "=r" (sp))
-
-void leon_prom_init(struct leon_prom_info *pspi)
-{
- unsigned long i;
- unsigned char cksum, *ptr;
- char *addr_str, *end;
- unsigned long sp;
- GETREGSP(sp);
-
- pspi->freq_khz = CONFIG_SYS_CLK_FREQ / 1000;
-
- /* Set Available main memory size */
- pspi->totphys.num_bytes = CONFIG_SYS_PROM_OFFSET - CONFIG_SYS_SDRAM_BASE;
- pspi->avail.num_bytes = pspi->totphys.num_bytes;
-
-#undef nodes
- pspi->nodes[3].level = -1;
- pspi->nodes[3].properties = __va(spi.root_properties + 3);
-
- /* Set Ethernet MAC address from environment */
- if ((addr_str = getenv("ethaddr")) != NULL) {
- for (i = 0; i < 6; i++) {
- pspi->idprom.id_ethaddr[i] = addr_str ?
- simple_strtoul(addr_str, &end, 16) : 0;
- if (addr_str) {
- addr_str = (*end) ? end + 1 : end;
- }
- }
- } else {
- /* HW Address not found in environment,
- * Set default HW address
- */
- pspi->idprom.id_ethaddr[0] = 0;
- pspi->idprom.id_ethaddr[1] = 0;
- pspi->idprom.id_ethaddr[2] = 0;
- pspi->idprom.id_ethaddr[3] = 0;
- pspi->idprom.id_ethaddr[4] = 0;
- pspi->idprom.id_ethaddr[5] = 0;
- }
-
- ptr = (unsigned char *)&pspi->idprom;
- for (i = cksum = 0; i <= 0x0E; i++)
- cksum ^= *ptr++;
- pspi->idprom.id_cksum = cksum;
-}
-
-static inline void set_cache(unsigned long regval)
-{
- asm volatile ("sta %0, [%%g0] %1\n\t":: "r" (regval), "i"(2):"memory");
-}
-
-extern unsigned short bss_start, bss_end;
-
-/* mark as section .img.main.text, to be referenced in linker script */
-int prom_init(void)
-{
- struct leon_prom_info *pspi = (void *)
- ((((unsigned int)&spi) & PROM_SIZE_MASK) + CONFIG_SYS_PROM_OFFSET);
-
- /* disable mmu */
- srmmu_set_mmureg(0x00000000);
- __asm__ __volatile__("flush\n\t");
-
- /* init prom info struct */
- leon_prom_init(pspi);
-
- kernel_arg_promvec = &pspi->romvec;
-#ifdef PRINT_ROM_VEC
- printf("Kernel rom vec: 0x%lx\n", (unsigned int)(&pspi->romvec));
-#endif
- return 0;
-}
-
-/* Copy current kernel boot argument to ROMvec */
-void prepare_bootargs(char *bootargs)
-{
- struct leon_prom_info *pspi;
- char *src, *dst;
- int left;
-
- /* if no bootargs set, skip copying ==> default bootline */
- if (bootargs && (*bootargs != '\0')) {
- pspi = (void *)((((unsigned int)&spi) & PROM_SIZE_MASK) +
- CONFIG_SYS_PROM_OFFSET);
- src = bootargs;
- dst = &pspi->arg[0];
- left = 255; /* max len */
- while (*src && left > 0) {
- *dst++ = *src++;
- left--;
- }
- /* terminate kernel command line string */
- *dst = 0;
- }
-}
-
-void srmmu_init_cpu(unsigned int entry)
-{
- sparc_srmmu_setup *psrmmu_tables = (void *)
- ((((unsigned int)&srmmu_tables) & PROM_SIZE_MASK) +
- CONFIG_SYS_PROM_OFFSET);
-
- /* Make context 0 (kernel's context) point
- * to our prepared memory mapping
- */
-#define PTD 1
- psrmmu_tables->ctx_table[0] =
- ((unsigned int)&psrmmu_tables->pgd_table[0x00]) >> 4 | PTD;
-
- /* Set virtual kernel address 0xf0000000
- * to SRAM/SDRAM address.
- * Make it READ/WRITE/EXEC to SuperUser
- */
-#define PTE 2
-#define ACC_SU_ALL 0x1c
- psrmmu_tables->pgd_table[0xf0] =
- (CONFIG_SYS_SDRAM_BASE >> 4) | ACC_SU_ALL | PTE;
- psrmmu_tables->pgd_table[0xf1] =
- ((CONFIG_SYS_SDRAM_BASE + 0x1000000) >> 4) | ACC_SU_ALL | PTE;
- psrmmu_tables->pgd_table[0xf2] =
- ((CONFIG_SYS_SDRAM_BASE + 0x2000000) >> 4) | ACC_SU_ALL | PTE;
- psrmmu_tables->pgd_table[0xf3] =
- ((CONFIG_SYS_SDRAM_BASE + 0x3000000) >> 4) | ACC_SU_ALL | PTE;
- psrmmu_tables->pgd_table[0xf4] =
- ((CONFIG_SYS_SDRAM_BASE + 0x4000000) >> 4) | ACC_SU_ALL | PTE;
- psrmmu_tables->pgd_table[0xf5] =
- ((CONFIG_SYS_SDRAM_BASE + 0x5000000) >> 4) | ACC_SU_ALL | PTE;
- psrmmu_tables->pgd_table[0xf6] =
- ((CONFIG_SYS_SDRAM_BASE + 0x6000000) >> 4) | ACC_SU_ALL | PTE;
- psrmmu_tables->pgd_table[0xf7] =
- ((CONFIG_SYS_SDRAM_BASE + 0x7000000) >> 4) | ACC_SU_ALL | PTE;
-
- /* convert rom vec pointer to virtual address */
- kernel_arg_promvec = (struct linux_romvec *)
- (((unsigned int)kernel_arg_promvec & 0x0fffffff) | 0xf0000000);
-
- /* Set Context pointer to point to context table
- * 256 contexts supported.
- */
- srmmu_set_ctable_ptr((unsigned int)&psrmmu_tables->ctx_table[0]);
-
- /* Set kernel's context, context zero */
- srmmu_set_context(0);
-
- /* Invalidate all Cache */
- __asm__ __volatile__("flush\n\t");
-
- srmmu_set_mmureg(0x00000001);
- leon_flush_tlb_all();
- leon_flush_cache_all();
-}
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-28 01:27:38 +0000