diff options
Diffstat (limited to 'arch/sparc/cpu/leon3/prom.c')
| -rw-r--r-- | arch/sparc/cpu/leon3/prom.c | 1067 |
1 files changed, 0 insertions, 1067 deletions
diff --git a/arch/sparc/cpu/leon3/prom.c b/arch/sparc/cpu/leon3/prom.c deleted file mode 100644 index 1f185b776b..0000000000 --- a/arch/sparc/cpu/leon3/prom.c +++ /dev/null @@ -1,1067 +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 <ambapp.h> -#include <grlib/apbuart.h> -#include <grlib/irqmp.h> -#include <grlib/gptimer.h> - -#include <config.h> -/* -#define PRINT_ROM_VEC -*/ -extern struct linux_romvec *kernel_arg_promvec; - -DECLARE_GLOBAL_DATA_PTR; - -#define PROM_PGT __attribute__ ((__section__ (".prom.pgt"))) -#define PROM_TEXT __attribute__ ((__section__ (".prom.text"))) -#define PROM_DATA __attribute__ ((__section__ (".prom.data"))) - -ambapp_dev_gptimer *gptimer; - -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); - ambapp_dev_apbuart *leon3_apbuart; -}; - -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) -{ - ambapp_dev_apbuart *uart; - - /* get physical address */ - struct leon_prom_info *pspi = - (void *)(CONFIG_SYS_PROM_OFFSET + sizeof(srmmu_tables)); - - uart = (ambapp_dev_apbuart *) - SPARC_BYPASS_READ(&pspi->reloc_funcs.leon3_apbuart); - - /* no UART? */ - if (!uart) - return 0; - - /***** put char in buffer... *********** - * Make sure all functions are inline! * - ***************************************/ - - /* Wait for last character to go. */ - while (!(SPARC_BYPASS_READ(&uart->status) - & APBUART_STATUS_THE)); - - /* Send data */ - SPARC_BYPASS_WRITE(&uart->data, c); - - /* Wait for data to be sent */ - while (!(SPARC_BYPASS_READ(&uart->status) - & APBUART_STATUS_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; - - /* Set the pointer to the Console UART in romvec */ - pspi->reloc_funcs.leon3_apbuart = gd->arch.uart; - - { - int j = 1; -#ifdef CONFIG_SMP - ambapp_dev_irqmp *b; - b = (ambapp_dev_irqmp *) leon3_getapbbase(VENDOR_GAISLER, - GAISLER_IRQMP); - if (b) { - j = 1 + ((LEON3_BYPASS_LOAD_PA(&(b->mpstatus)) - >> LEON3_IRQMPSTATUS_CPUNR) & 0xf); - } -#endif -#undef nodes - pspi->nodes[2 + j].level = -1; - pspi->nodes[2 + j].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(); -} |