2 * Renesas SH7751R R2D-PLUS emulation
4 * Copyright (c) 2007 Magnus Damm
5 * Copyright (c) 2008 Paul Mundt
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
34 #include "sh7750_regs.h"
38 #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */
39 #define SDRAM_SIZE 0x04000000
41 #define SM501_VRAM_SIZE 0x800000
43 /* CONFIG_BOOT_LINK_OFFSET of Linux kernel */
44 #define LINUX_LOAD_OFFSET 0x800000
46 #define PA_IRLMSK 0x00
47 #define PA_POWOFF 0x30
48 #define PA_VERREG 0x32
49 #define PA_OUTPORT 0x36
79 PCI_INTD, CF_IDE, CF_CD, PCI_INTC, SM501, KEY, RTC_A, RTC_T,
80 SDCARD, PCI_INTA, PCI_INTB, EXT, TP,
84 static const struct { short irl; uint16_t msk; } irqtab[NR_IRQS] = {
85 [CF_IDE] = { 1, 1<<9 },
86 [CF_CD] = { 2, 1<<8 },
87 [PCI_INTA] = { 9, 1<<14 },
88 [PCI_INTB] = { 10, 1<<13 },
89 [PCI_INTC] = { 3, 1<<12 },
90 [PCI_INTD] = { 0, 1<<11 },
91 [SM501] = { 4, 1<<10 },
93 [RTC_A] = { 6, 1<<5 },
94 [RTC_T] = { 7, 1<<4 },
95 [SDCARD] = { 8, 1<<7 },
100 static void update_irl(r2d_fpga_t *fpga)
103 for (i = 0; i < NR_IRQS; i++)
104 if (fpga->irlmon & fpga->irlmsk & irqtab[i].msk)
105 if (irqtab[i].irl < irl)
107 qemu_set_irq(fpga->irl, irl ^ 15);
110 static void r2d_fpga_irq_set(void *opaque, int n, int level)
112 r2d_fpga_t *fpga = opaque;
114 fpga->irlmon |= irqtab[n].msk;
116 fpga->irlmon &= ~irqtab[n].msk;
120 static uint32_t r2d_fpga_read(void *opaque, target_phys_addr_t addr)
122 r2d_fpga_t *s = opaque;
139 r2d_fpga_write(void *opaque, target_phys_addr_t addr, uint32_t value)
141 r2d_fpga_t *s = opaque;
153 qemu_system_shutdown_request();
162 static CPUReadMemoryFunc * const r2d_fpga_readfn[] = {
168 static CPUWriteMemoryFunc * const r2d_fpga_writefn[] = {
174 static qemu_irq *r2d_fpga_init(target_phys_addr_t base, qemu_irq irl)
179 s = qemu_mallocz(sizeof(r2d_fpga_t));
183 iomemtype = cpu_register_io_memory(r2d_fpga_readfn,
184 r2d_fpga_writefn, s);
185 cpu_register_physical_memory(base, 0x40, iomemtype);
186 return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS);
189 static void r2d_pci_set_irq(void *opaque, int n, int l)
191 qemu_irq *p = opaque;
193 qemu_set_irq(p[n], l);
196 static int r2d_pci_map_irq(PCIDevice *d, int irq_num)
198 const int intx[] = { PCI_INTA, PCI_INTB, PCI_INTC, PCI_INTD };
199 return intx[d->devfn >> 3];
202 static void r2d_init(ram_addr_t ram_size,
203 const char *boot_device,
204 const char *kernel_filename, const char *kernel_cmdline,
205 const char *initrd_filename, const char *cpu_model)
208 struct SH7750State *s;
209 ram_addr_t sdram_addr;
216 cpu_model = "SH7751R";
218 env = cpu_init(cpu_model);
220 fprintf(stderr, "Unable to find CPU definition\n");
224 /* Allocate memory space */
225 sdram_addr = qemu_ram_alloc(SDRAM_SIZE);
226 cpu_register_physical_memory(SDRAM_BASE, SDRAM_SIZE, sdram_addr);
227 /* Register peripherals */
228 s = sh7750_init(env);
229 irq = r2d_fpga_init(0x04000000, sh7750_irl(s));
230 pci = sh_pci_register_bus(r2d_pci_set_irq, r2d_pci_map_irq, irq, 0, 4);
232 sm501_init(0x10000000, SM501_VRAM_SIZE, irq[SM501], serial_hds[2]);
234 /* onboard CF (True IDE mode, Master only). */
235 if ((dinfo = drive_get(IF_IDE, 0, 0)) != NULL)
236 mmio_ide_init(0x14001000, 0x1400080c, irq[CF_IDE], 1,
239 /* NIC: rtl8139 on-board, and 2 slots. */
240 for (i = 0; i < nb_nics; i++)
241 pci_nic_init_nofail(&nd_table[i], "rtl8139", i==0 ? "2" : NULL);
243 /* Todo: register on board registers */
244 if (kernel_filename) {
246 /* initialization which should be done by firmware */
247 stl_phys(SH7750_BCR1, 1<<3); /* cs3 SDRAM */
248 stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
250 if (kernel_cmdline) {
251 kernel_size = load_image_targphys(kernel_filename,
252 SDRAM_BASE + LINUX_LOAD_OFFSET,
253 SDRAM_SIZE - LINUX_LOAD_OFFSET);
254 env->pc = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000;
255 pstrcpy_targphys("cmdline", SDRAM_BASE + 0x10100, 256, kernel_cmdline);
257 kernel_size = load_image_targphys(kernel_filename, SDRAM_BASE, SDRAM_SIZE);
258 env->pc = SDRAM_BASE | 0xa0000000; /* Start from P2 area */
261 if (kernel_size < 0) {
262 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
268 static QEMUMachine r2d_machine = {
270 .desc = "r2d-plus board",
274 static void r2d_machine_init(void)
276 qemu_register_machine(&r2d_machine);
279 machine_init(r2d_machine_init);