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
33 #include "sh7750_regs.h"
36 #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */
37 #define SDRAM_SIZE 0x04000000
39 #define SM501_VRAM_SIZE 0x800000
41 /* CONFIG_BOOT_LINK_OFFSET of Linux kernel */
42 #define LINUX_LOAD_OFFSET 0x800000
44 #define PA_IRLMSK 0x00
45 #define PA_POWOFF 0x30
46 #define PA_VERREG 0x32
47 #define PA_OUTPORT 0x36
78 PCI_INTD, CF_IDE, CF_CD, PCI_INTC, SM501, KEY, RTC_A, RTC_T,
79 SDCARD, PCI_INTA, PCI_INTB, EXT, TP,
83 static const struct { short irl; uint16_t msk; } irqtab[NR_IRQS] = {
84 [CF_IDE] = { 1, 1<<9 },
85 [CF_CD] = { 2, 1<<8 },
86 [PCI_INTA] = { 9, 1<<14 },
87 [PCI_INTB] = { 10, 1<<13 },
88 [PCI_INTC] = { 3, 1<<12 },
89 [PCI_INTD] = { 0, 1<<11 },
90 [SM501] = { 4, 1<<10 },
92 [RTC_A] = { 6, 1<<5 },
93 [RTC_T] = { 7, 1<<4 },
94 [SDCARD] = { 8, 1<<7 },
99 static void update_irl(r2d_fpga_t *fpga)
102 for (i = 0; i < NR_IRQS; i++)
103 if (fpga->irlmon & fpga->irlmsk & irqtab[i].msk)
104 if (irqtab[i].irl < irl)
106 qemu_set_irq(fpga->irl, irl ^ 15);
109 static void r2d_fpga_irq_set(void *opaque, int n, int level)
111 r2d_fpga_t *fpga = opaque;
113 fpga->irlmon |= irqtab[n].msk;
115 fpga->irlmon &= ~irqtab[n].msk;
119 static uint32_t r2d_fpga_read(void *opaque, target_phys_addr_t addr)
121 r2d_fpga_t *s = opaque;
138 r2d_fpga_write(void *opaque, target_phys_addr_t addr, uint32_t value)
140 r2d_fpga_t *s = opaque;
159 static CPUReadMemoryFunc * const r2d_fpga_readfn[] = {
165 static CPUWriteMemoryFunc * const r2d_fpga_writefn[] = {
171 static qemu_irq *r2d_fpga_init(target_phys_addr_t base, qemu_irq irl)
176 s = qemu_mallocz(sizeof(r2d_fpga_t));
180 iomemtype = cpu_register_io_memory(r2d_fpga_readfn,
181 r2d_fpga_writefn, s);
182 cpu_register_physical_memory(base, 0x40, iomemtype);
183 return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS);
186 static void r2d_pci_set_irq(void *opaque, int n, int l)
188 qemu_irq *p = opaque;
190 qemu_set_irq(p[n], l);
193 static int r2d_pci_map_irq(PCIDevice *d, int irq_num)
195 const int intx[] = { PCI_INTA, PCI_INTB, PCI_INTC, PCI_INTD };
196 return intx[d->devfn >> 3];
199 static void r2d_init(ram_addr_t ram_size,
200 const char *boot_device,
201 const char *kernel_filename, const char *kernel_cmdline,
202 const char *initrd_filename, const char *cpu_model)
205 struct SH7750State *s;
206 ram_addr_t sdram_addr;
213 cpu_model = "SH7751R";
215 env = cpu_init(cpu_model);
217 fprintf(stderr, "Unable to find CPU definition\n");
221 /* Allocate memory space */
222 sdram_addr = qemu_ram_alloc(SDRAM_SIZE);
223 cpu_register_physical_memory(SDRAM_BASE, SDRAM_SIZE, sdram_addr);
224 /* Register peripherals */
225 s = sh7750_init(env);
226 irq = r2d_fpga_init(0x04000000, sh7750_irl(s));
227 pci = sh_pci_register_bus(r2d_pci_set_irq, r2d_pci_map_irq, irq, 0, 4);
229 sm501_init(0x10000000, SM501_VRAM_SIZE, irq[SM501], serial_hds[2]);
231 /* onboard CF (True IDE mode, Master only). */
232 if ((dinfo = drive_get(IF_IDE, 0, 0)) != NULL)
233 mmio_ide_init(0x14001000, 0x1400080c, irq[CF_IDE], 1,
236 /* NIC: rtl8139 on-board, and 2 slots. */
237 for (i = 0; i < nb_nics; i++)
238 pci_nic_init(&nd_table[i], "rtl8139", i==0 ? "2" : NULL);
240 /* Todo: register on board registers */
241 if (kernel_filename) {
243 /* initialization which should be done by firmware */
244 stl_phys(SH7750_BCR1, 1<<3); /* cs3 SDRAM */
245 stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
247 if (kernel_cmdline) {
248 kernel_size = load_image_targphys(kernel_filename,
249 SDRAM_BASE + LINUX_LOAD_OFFSET,
250 SDRAM_SIZE - LINUX_LOAD_OFFSET);
251 env->pc = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000;
252 pstrcpy_targphys(SDRAM_BASE + 0x10100, 256, kernel_cmdline);
254 kernel_size = load_image_targphys(kernel_filename, SDRAM_BASE, SDRAM_SIZE);
255 env->pc = SDRAM_BASE | 0xa0000000; /* Start from P2 area */
258 if (kernel_size < 0) {
259 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
265 static QEMUMachine r2d_machine = {
267 .desc = "r2d-plus board",
271 static void r2d_machine_init(void)
273 qemu_register_machine(&r2d_machine);
276 machine_init(r2d_machine_init);