Changeset a73ebf0 in mainline for boot/arch/sparc32/src/main.c

Timestamp:

2013-10-15T16:34:04Z (11 years ago)

Author:

Jakub Klama <jakub.klama@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

4d2dba7

Parents:

1f12fab

Message:

Pass AMBA P&P devices and memory size info from loader to kernel
using bootinfo_t structure.

File:

• boot/arch/sparc32/src/main.c (modified) (2 diffs)

boot/arch/sparc32/src/main.c

@@ -62 +62 @@
         amba_device_t *uart = ambapp_lookup_first(GAISLER, GAISLER_APBUART);
         amba_uart_base = uart->bars[0].start;
+        bootinfo.uart_base = amba_uart_base;
+        bootinfo.uart_irq = uart->irq;
 
+        /* Look up for IRQMP */
+        amba_device_t *irqmp = ambapp_lookup_first(GAISLER, GAISLER_IRQMP);
+        bootinfo.intc_base = irqmp->bars[0].start;
+
+        /* Look up for timer */
+        amba_device_t *timer = ambapp_lookup_first(GAISLER, GAISLER_GPTIMER);
+        bootinfo.timer_base = timer->bars[0].start;
+        bootinfo.timer_irq = timer->irq;
+        
+        /* Lookp up for memory controller and obtain memory size */
+        if (ambapp_fake()) {
+                bootinfo.memsize = 64 * 1024 * 1024; // 64MB
+        } else {
+                amba_device_t *mctrl = ambapp_lookup_first(ESA, ESA_MCTRL);
+                volatile mctrl_mcfg2_t *mcfg2 = (volatile mctrl_mcfg2_t *)(mctrl->bars[0].start + 0x4);
+                bootinfo.memsize = (1 << (13 + mcfg2->bank_size));
+        }
+        
         /* Standard output is now initialized */
         version_print();
@@ -73 +93 @@
 
         ambapp_print_devices();
+
+        printf("Memory size: %dMB\n", bootinfo.memsize >> 20);
 
         mmu_init();